A. Huber - MPIA Heidelberg

A. Huber
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Name
A. Huber
Affiliation
MPIA Heidelberg
City
Heidelberg
Country
Germany

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Mathematics - Algebraic Geometry (10)
 
Physics - Instrumentation and Detectors (9)
 
High Energy Physics - Experiment (7)
 
Mathematics - Number Theory (7)
 
Mathematics - K-Theory and Homology (5)
 
Nuclear Experiment (4)
 
Physics - Plasma Physics (3)
 
High Energy Physics - Phenomenology (3)
 
Mathematics - Analysis of PDEs (3)
 
Computer Science - Discrete Mathematics (3)
 
Mathematics - Combinatorics (2)
 
Physics - Superconductivity (2)
 
Physics - Mesoscopic Systems and Quantum Hall Effect (2)
 
Cosmology and Nongalactic Astrophysics (2)
 
Instrumentation and Methods for Astrophysics (2)
 
Computer Science - Computational Complexity (1)
 
Computer Science - Computer Science and Game Theory (1)
 
Computer Science - Data Structures and Algorithms (1)
 
Mathematics - Probability (1)
 
Computer Science - Robotics (1)
 
Physics - Strongly Correlated Electrons (1)
 
Computer Science - Human-Computer Interaction (1)
 
Physics - Materials Science (1)
 
Astrophysics of Galaxies (1)

Publications Authored By A. Huber

We report the results of a first experimental search for lepton number violation by four units in the neutrinoless quadruple-$\beta$ decay of $^{150}$Nd using a total exposure of $0.19$ kg$\cdot$y recorded with the NEMO-3 detector at the Modane Underground Laboratory (LSM). We find no evidence of this decay and set lower limits on the half-life in the range $T_{1/2}>(1. Read More

2017May
Authors: GRAVITY Collaboration, R. Abuter, M. Accardo, A. Amorim, N. Anugu, G. Ávila, N. Azouaoui, M. Benisty, J. P. Berger, N. Blind, H. Bonnet, P. Bourget, W. Brandner, R. Brast, A. Buron, L. Burtscher, F. Cassaing, F. Chapron, É. Choquet, Y. Clénet, C. Collin, V. Coudé du Foresto, W. de Wit, P. T. de Zeeuw, C. Deen, F. Delplancke-Ströbele, R. Dembet, F. Derie, J. Dexter, G. Duvert, M. Ebert, A. Eckart, F. Eisenhauer, M. Esselborn, P. Fédou, G. Finger, P. Garcia, C. E. Garcia Dabo, R. Garcia Lopez, E. Gendron, R. Genzel, S. Gillessen, F. Gonte, P. Gordo, M. Grould, U. Grözinger, S. Guieu, P. Haguenauer, O. Hans, X. Haubois, M. Haug, F. Haussmann, Th. Henning, S. Hippler, M. Horrobin, A. Huber, Z. Hubert, N. Hubin, C. A. Hummel, G. Jakob, A. Janssen, L. Jochum, L. Jocou, A. Kaufer, S. Kellner, L. Kern, P. Kervella, M. Kiekebusch, R. Klein, Y. Kok, J. Kolb, M. Kulas, S. Lacour, V. Lapeyrère, B. Lazareff, J. -B. Le Bouquin, P. Lèna, R. Lenzen, S. Lévêque, M. Lippa, Y. Magnard, L. Mehrgan, M. Mellein, A. Mérand, J. Moreno-Ventas, T. Moulin, E. Müller, F. Müller, U. Neumann, S. Oberti, T. Ott, L. Pallanca, J. Panduro, L. Pasquini, T. Paumard, I. Percheron, K. Perraut, G. Perrin, A. Pflüger, O. Pfuhl, T. Phan Duc, P. M. Plewa, D. Popovic, S. Rabien, A. Ramírez, J. Ramos, C. Rau, M. Riquelme, R. -R. Rohloff, G. Rousset, J. Sanchez-Bermudez, S. Scheithauer, M. Schöller, N. Schuhler, J. Spyromilio, C. Straubmeier, E. Sturm, M. Suarez, K. R. W. Tristram, N. Ventura, F. Vincent, I. Waisberg, I. Wank, J. Weber, E. Wieprecht, M. Wiest, E. Wiezorrek, M. Wittkowski, J. Woillez, B. Wolff, S. Yazici, D. Ziegler, G. Zins

GRAVITY is a new instrument to coherently combine the light of the European Southern Observatory Very Large Telescope Interferometer to form a telescope with an equivalent 130 m diameter angular resolution and a collecting area of 200 m$^2$. The instrument comprises fiber fed integrated optics beam combination, high resolution spectroscopy, built-in beam analysis and control, near-infrared wavefront sensing, phase-tracking, dual beam operation and laser metrology [.. Read More

In a seminal paper, Chen, Roughgarden and Valiant studied cost sharing protocols for network design with the objective to implement a low-cost Steiner forest as a Nash equilibrium of an induced cost-sharing game. One of the most intriguing open problems up to date is to understand the power of budget-balanced and separable cost sharing protocols in order to induce low-cost Steiner forests. In this work, we focus on undirected networks and analyze topological properties of the underlying graph so that an optimal Steiner forest can be implemented as a Nash equilibrium (by some separable cost sharing protocol) independent of the edge costs. Read More

The BiPo-3 detector, running in the Canfranc Underground Laboratory (Laboratorio Subterr\'aneo de Canfranc, LSC, Spain) since 2013, is a low-radioactivity detector dedicated to measuring ultra low natural radionuclide contaminations of $^{208}$Tl ($^{232}$Th chain) and $^{214}$Bi ($^{238}$U chain) in thin materials. The total sensitive surface area of the detector is 3.6 m$^2$. Read More

The NEMO-3 experiment measured the half-life of the $2\nu\beta\beta$ decay and searched for the $0\nu\beta\beta$ decay of $^{116}$Cd. Using $410$ g of $^{116}$Cd installed in the detector with an exposure of $5.26$ y, ($4968\pm74$) events corresponding to the $2\nu\beta\beta$ decay of $^{116}$Cd to the ground state of $^{116}$Sn have been observed with a signal to background ratio of about $12$. Read More

ADC non-linearities are a major systematic effect in the search for keV-scale sterile neutrinos with tritium $\beta$-decay experiments like KATRIN. They can significantly distort the spectral shape and thereby obscure the tiny kink-like signature of a sterile neutrino. In this work we demonstrate various mitigation techniques to reduce the impact of ADC non-linearities on the tritium $\beta$-decay spectrum to a level of $<$ ppm. Read More

2016Jun
Affiliations: 1IPHC, ULP, CNRS/IN2P3, France, 2IPHC, ULP, CNRS/IN2P3, France, 3IPHC, ULP, CNRS/IN2P3, France, 4LAL, Université Paris-Sud, France, 5Idaho National Laboratory, U.S.A, 6NRC Kurchatov Institute, ITEP, Russia, 7UCL, United Kingdom, 8LAL, Université Paris-Sud, France, 9University of Manchester, United Kingdom, 10LAL, Université Paris-Sud, France, 11JINR, Russia, 12CPPM, Université de Marseille, France, 13Idaho National Laboratory, U.S.A, 14LAL, Université Paris-Sud, France, 15UCL, United Kingdom, 16CENBG, Université de Bordeaux, France, 17University of Texas at Austin, U.S.A, 18LPC Caen, ENSICAEN, Université de Caen, France, 19University of Manchester, United Kingdom, 20UCL, United Kingdom, 21LAPP, Université de Savoie, France, 22LPC Caen, ENSICAEN, Université de Caen, France, 23JINR, Russia, 24LAL, Université Paris-Sud, France, 25University of Manchester, United Kingdom, 26Institute of Experimental and Applied Physics, Czech Technical University in Prague, Czech Republic, 27JINR, Russia, 28UCL, United Kingdom, 29LAL, Université Paris-Sud, France, 30LAL, Université Paris-Sud, France, 31LPC Caen, ENSICAEN, Université de Caen, France, 32University of Manchester, United Kingdom, 33Institute of Experimental and Applied Physics, Czech Technical University in Prague, Czech Republic, 34CENBG, Université de Bordeaux, France, 35CENBG, Université de Bordeaux, France, 36CENBG, Université de Bordeaux, France, 37LAL, Université Paris-Sud, France, 38JINR, Russia, 39JINR, Russia, 40NRC Kurchatov Institute, ITEP, Russia, 41JINR, Russia, 42LAL, Université Paris-Sud, France, 43University of Texas at Austin, U.S.A, 44LPC Caen, ENSICAEN, Université de Caen, France, 45LAPP, Université de Savoie, France, 46University of Texas at Austin, U.S.A, 47UCL, United Kingdom, 48LAL, Université Paris-Sud, France, 49CENBG, Université de Bordeaux, France, 50Institute of Experimental and Applied Physics, Czech Technical University in Prague, Czech Republic, 51CENBG, Université de Bordeaux, France, 52LPC Caen, ENSICAEN, Université de Caen, France, 53University of Warwick, United Kingdom, 54UCL, United Kingdom, 55JINR, Russia, 56Osaka University, Japan, 57University of Texas at Austin, U.S.A, 58IPHC, ULP, CNRS/IN2P3, France, 59Saga University, Japan, 60University of Texas at Austin, U.S.A, 61CENBG, Université de Bordeaux, France, 62CENBG, Université de Bordeaux, France, 63FMFI, Comenius Univ., Slovakia, 64Institute of Experimental and Applied Physics, Czech Technical University in Prague, Czech Republic, 65University of Warwick, United Kingdom, 66LAPP, Université de Savoie, France, 67LSCE, CNRS, France, 68UCL, United Kingdom, 69Idaho National Laboratory, U.S.A, 70Institute of Experimental and Applied Physics, Czech Technical University in Prague, Czech Republic, 71UCL, United Kingdom, 72University of Texas at Austin, U.S.A, 73LAL, Université Paris-Sud, France, 74JINR, Russia, 75LAL, Université Paris-Sud, France, 76FMFI, Comenius Univ., Slovakia, 77Institute of Experimental and Applied Physics, Czech Technical University in Prague, Czech Republic, 78Institute of Experimental and Applied Physics, Czech Technical University in Prague, Czech Republic, 79JINR, Russia, 80University of Manchester, United Kingdom, 81CENBG, Université de Bordeaux, France, 82Institute of Experimental and Applied Physics, Czech Technical University in Prague, Czech Republic, 83Jyvaskyla University, Finland, 84MHC, South Hadley, U.S.A, 85LAL, Université Paris-Sud, France, 86UCL, United Kingdom, 87JINR, Russia, 88UCL, United Kingdom, 89Institute for Nuclear Research, Ukraine, 90JINR, Russia, 91NRC Kurchatov Institute, ITEP, Russia, 92NRC Kurchatov Institute, ITEP, Russia, 93UCL, United Kingdom, 94Charles University in Prague, Czech Republic, 95UCL, United Kingdom, 96Charles University in Prague, Czech Republic

We present results from a search for neutrinoless double-$\beta$ ($0\nu\beta\beta$) decay using 36.6 g of the isotope $^{150}$Nd with data corresponding to a live time of 5.25 y recorded with the NEMO-3 detector. Read More

This paper reports a case study on the User Experience (UX)of an industrial robotic prototype in the context of human-robot cooperation in an automotive assembly line. The goal was to find out what kinds of suggestions the assembly line workers, who actually use the new robotic system, propose in order to improve the human-robot interaction (HRI). The operators working with the robotic prototype were interviewed three weeks after the deployment using established UX narrative interview guidelines. Read More

Extended dynamical mean-field theory (EDMFT) is insufficient to describe non-local effects in strongly correlated systems, since corrections to the mean-field solution are generally large. We present an efficient scheme for the construction of diagrammatic extensions of EDMFT that avoids usual double counting problem by using an exact change of variables (the dual boson formalism) to distinguish the correlations included in the mean-field solution and those beyond. With a computational efficiency comparable to EDMFT+GW approach, our scheme significantly improves on the charge order transition phase boundary in the extended Hubbard model. Read More

2016Apr
Affiliations: 1IPHC, ULP, CNRS/IN2P3, France, 2IPHC, ULP, CNRS/IN2P3, France, 3IPHC, ULP, CNRS/IN2P3, France, 4LAL, Univ Paris-Sud, France, 5Kurchatov Institute, Russia, 6Idaho National Laboratory, USA, 7ITEP, Russia, 8UCL, United Kingdom, 9LAL, Univ Paris-Sud, France, 10University of Manchester, United Kingdom, 11LAL, Univ Paris-Sud, France, 12JINR, Russia, 13CPPM, Université de Marseille, France, 14Idaho National Laboratory, USA, 15LAL, Univ Paris-Sud, France, 16UCL, United Kingdom, 17CENBG, Université de Bordeaux, France, 18University of Texas at Austin, USA, 19LPC Caen, ENSICAEN, Université de Caen, France, 20University of Manchester, United Kingdom, 21UCL, United Kingdom, 22LAPP, Université de Savoie, France, 23LPC Caen, ENSICAEN, Université de Caen, France, 24JINR, Russia, 25LAL, Univ Paris-Sud, France, 26University of Manchester, United Kingdom, 27Institute of Experimental and Applied Physics, Czech Technical University in Prague, Czech Republic, 28JINR, Russia, 29UCL, United Kingdom, 30LAL, Univ Paris-Sud, France, 31LAL, Univ Paris-Sud, France, 32LPC Caen, ENSICAEN, Université de Caen, France, 33University of Manchester, United Kingdom, 34Institute of Experimental and Applied Physics, Czech Technical University in Prague, Czech Republic, 35CENBG, Université de Bordeaux, France, 36CENBG, Université de Bordeaux, France, 37CENBG, Université de Bordeaux, France, 38LAL, Univ Paris-Sud, France, 39JINR, Russia, 40JINR, Russia, 41ITEP, Russia, 42JINR, Russia, 43LAL, Univ Paris-Sud, France, 44University of Texas at Austin, USA, 45Kurchatov Institute, Russia, 46LPC Caen, ENSICAEN, Université de Caen, France, 47LAPP, Université de Savoie, France, 48University of Texas at Austin, USA, 49UCL, United Kingdom, 50LAL, Univ Paris-Sud, France, 51CENBG, Université de Bordeaux, France, 52Institute of Experimental and Applied Physics, Czech Technical University in Prague, Czech Republic, 53CENBG, Université de Bordeaux, France, 54LPC Caen, ENSICAEN, Université de Caen, France, 55University of Warwick, United Kingdom, 56UCL, United Kingdom, 57JINR, Russia, 58Osaka University, Japan, 59University of Texas at Austin, USA, 60IPHC, ULP, CNRS/IN2P3, France, 61Saga University, Japan, 62University of Texas at Austin, USA, 63CENBG, Université de Bordeaux, France, 64CENBG, Université de Bordeaux, France, 65FMFI, Comenius Univ., Slovakia, 66Institute of Experimental and Applied Physics, Czech Technical University in Prague, Czech Republic, 67University of Warwick, United Kingdom, 68LAPP, Université de Savoie, France, 69LSCE, CNRS, France, 70UCL, United Kingdom, 71Idaho National Laboratory, USA, 72Institute of Experimental and Applied Physics, Czech Technical University in Prague, Czech Republic, 73JINR, Russia, 74UCL, United Kingdom, 75University of Texas at Austin, USA, 76LAL, Univ Paris-Sud, France, 77JINR, Russia, 78LAL, Univ Paris-Sud, France, 79FMFI, Comenius Univ., Slovakia, 80Institute of Experimental and Applied Physics, Czech Technical University in Prague, Czech Republic, 81Institute of Experimental and Applied Physics, Czech Technical University in Prague, Czech Republic, 82JINR, Russia, 83University of Manchester, United Kingdom, 84CENBG, Université de Bordeaux, France, 85Institute of Experimental and Applied Physics, Czech Technical University in Prague, Czech Republic, 86Jyväskylä University, Finland, 87MHC, South Hadley, Massachusetts, USA, 88LAL, Univ Paris-Sud, France, 89UCL, United Kingdom, 90JINR, Russia, 91UCL, United Kingdom, 92Institute for Nuclear Research, Ukraine, 93JINR, Russia, 94ITEP, Russia, 95ITEP, Russia, 96UCL, United Kingdom, 97Charles University in Prague, Czech Republic, 98UCL, United Kingdom, 99Kurchatov Institute, Russia, 100Charles University in Prague, Czech Republic

The NEMO-3 experiment at the Modane Underground Laboratory has investigated the double-$\beta$ decay of $^{48}{\rm Ca}$. Using $5.25$ yr of data recorded with a $6. Read More

2016Mar
Authors: M. Arenz, M. Babutzka, M. Bahr, J. P. Barrett, S. Bauer, M. Beck, A. Beglarian, J. Behrens, T. Bergmann, U. Besserer, J. Blümer, L. I. Bodine, K. Bokeloh, J. Bonn, B. Bornschein, L. Bornschein, S. Büsch, T. H. Burritt, S. Chilingaryan, T. J. Corona, L. De Viveiros, P. J. Doe, O. Dragoun, G. Drexlin, S. Dyba, S. Ebenhöch, K. Eitel, E. Ellinger, S. Enomoto, M. Erhard, D. Eversheim, M. Fedkevych, A. Felden, S. Fischer, J. A. Formaggio, F. Fränkle, D. Furse, M. Ghilea, W. Gil, F. Glück, A. Gonzalez Urena, S. Görhardt, S. Groh, S. Grohmann, R. Grössle, R. Gumbsheimer, M. Hackenjos, V. Hannen, F. Harms, N. Hauÿmann, F. Heizmann, K. Helbing, W. Herz, S. Hickford, D. Hilk, B. Hillen, T. Höhn, B. Holzapfel, M. Hötzel, M. A. Howe, A. Huber, A. Jansen, N. Kernert, L. Kippenbrock, M. Kleesiek, M. Klein, A. Kopmann, A. Kosmider, A. Kovalík, B. Krasch, M. Kraus, H. Krause, M. Krause, L. Kuckert, B. Kuffner, L. La Cascio, O. Lebeda, B. Leiber, J. Letnev, V. M. Lobashev, A. Lokhov, E. Malcherek, M. Mark, E. L. Martin, S. Mertens, S. Mirz, B. Monreal, K. Müller, M. Neuberger, H. Neumann, S. Niemes, M. Noe, N. S. Oblath, A. Off, H. -W. Ortjohann, A. Osipowicz, E. Otten, D. S. Parno, P. Plischke, A. W. P. Poon, M. Prall, F. Priester, P. C. -O. Ranitzsch, J. Reich, O. Rest, R. G. H. Robertson, M. Röllig, S. Rosendahl, S. Rupp, M. Rysavy, K. Schlösser, M. Schlösser, K. Schönung, M. Schrank, J. Schwarz, W. Seiler, H. Seitz-Moskaliuk, J. Sentkerestiova, A. Skasyrskaya, M. Slezak, A. Spalek, M. Steidl, N. Steinbrink, M. Sturm, M. Suesser, H. H. Telle, T. Thümmler, N. Titov, I. Tkachev, N. Trost, A. Unru, K. Valerius, D. Venos, R. Vianden, S. Vöcking, B. L. Wall, N. Wandkowsky, M. Weber, C. Weinheimer, C. Weiss, S. Welte, J. Wendel, K. L. Wierman, J. F. Wilkerson, D. Winzen, J. Wolf, S. Wüstling, M. Zacher, S. Zadoroghny, M. Zboril

The KATRIN experiment will probe the neutrino mass by measuring the beta-electron energy spectrum near the endpoint of tritium beta-decay. An integral energy analysis will be performed by an electro-static spectrometer (Main Spectrometer), an ultra-high vacuum vessel with a length of 23.2 m, a volume of 1240 m^3, and a complex inner electrode system with about 120000 individual parts. Read More

2016Feb
Authors: R. Adhikari, M. Agostini, N. Anh Ky, T. Araki, M. Archidiacono, M. Bahr, J. Baur, J. Behrens, F. Bezrukov, P. S. Bhupal Dev, D. Borah, A. Boyarsky, A. de Gouvea, C. A. de S. Pires, H. J. de Vega, A. G. Dias, P. Di Bari, Z. Djurcic, K. Dolde, H. Dorrer, M. Durero, O. Dragoun, M. Drewes, G. Drexlin, Ch. E. Düllmann, K. Eberhardt, S. Eliseev, C. Enss, N. W. Evans, A. Faessler, P. Filianin, V. Fischer, A. Fleischmann, J. A. Formaggio, J. Franse, F. M. Fraenkle, C. S. Frenk, G. Fuller, L. Gastaldo, A. Garzilli, C. Giunti, F. Glück, M. C. Goodman, M. C. Gonzalez-Garcia, D. Gorbunov, J. Hamann, V. Hannen, S. Hannestad, S. H. Hansen, C. Hassel, J. Heeck, F. Hofmann, T. Houdy, A. Huber, D. Iakubovskyi, A. Ianni, A. Ibarra, R. Jacobsson, T. Jeltema, J. Jochum, S. Kempf, T. Kieck, M. Korzeczek, V. Kornoukhov, T. Lachenmaier, M. Laine, P. Langacker, T. Lasserre, J. Lesgourgues, D. Lhuillier, Y. F. Li, W. Liao, A. W. Long, M. Maltoni, G. Mangano, N. E. Mavromatos, N. Menci, A. Merle, S. Mertens, A. Mirizzi, B. Monreal, A. Nozik, A. Neronov, V. Niro, Y. Novikov, L. Oberauer, E. Otten, N. Palanque-Delabrouille, M. Pallavicini, V. S. Pantuev, E. Papastergis, S. Parke, S. Pascoli, S. Pastor, A. Patwardhan, A. Pilaftsis, D. C. Radford, P. C. -O. Ranitzsch, O. Rest, D. J. Robinson, P. S. Rodrigues da Silva, O. Ruchayskiy, N. G. Sanchez, M. Sasaki, N. Saviano, A. Schneider, F. Schneider, T. Schwetz, S. Schönert, S. Scholl, F. Shankar, R. Shrock, N. Steinbrink, L. Strigari, F. Suekane, B. Suerfu, R. Takahashi, N. Thi Hong Van, I. Tkachev, M. Totzauer, Y. Tsai, C. G. Tully, K. Valerius, J. W. F. Valle, D. Venos, M. Viel, M. Vivier, M. Y. Wang, C. Weinheimer, K. Wendt, L. Winslow, J. Wolf, M. Wurm, Z. Xing, S. Zhou, K. Zuber

We present a comprehensive review of keV-scale sterile neutrino Dark Matter, collecting views and insights from all disciplines involved - cosmology, astrophysics, nuclear, and particle physics - in each case viewed from both theoretical and experimental/observational perspectives. After reviewing the role of active neutrinos in particle physics, astrophysics, and cosmology, we focus on sterile neutrinos in the context of the Dark Matter puzzle. Here, we first review the physics motivation for sterile neutrino Dark Matter, based on challenges and tensions in purely cold Dark Matter scenarios. Read More

Terahertz (THz) fields are widely applied for sensing, communication and quality control. In future applications, they could be efficiently confined, enhanced and manipulated - well below the classical diffraction limit - through the excitation of graphene plasmons (GPs). These possibilities emerge from the strongly reduced GP wavelength, lp, compared to the photon wavelength, l0, which can be controlled by modulating the carrier density of graphene via electrical gating. Read More

2015Jun
Affiliations: 1NEMO-3 Collaboration, 2NEMO-3 Collaboration, 3NEMO-3 Collaboration, 4NEMO-3 Collaboration, 5NEMO-3 Collaboration, 6NEMO-3 Collaboration, 7NEMO-3 Collaboration, 8NEMO-3 Collaboration, 9NEMO-3 Collaboration, 10NEMO-3 Collaboration, 11NEMO-3 Collaboration, 12NEMO-3 Collaboration, 13NEMO-3 Collaboration, 14NEMO-3 Collaboration, 15NEMO-3 Collaboration, 16NEMO-3 Collaboration, 17NEMO-3 Collaboration, 18NEMO-3 Collaboration, 19NEMO-3 Collaboration, 20NEMO-3 Collaboration, 21NEMO-3 Collaboration, 22NEMO-3 Collaboration, 23NEMO-3 Collaboration, 24NEMO-3 Collaboration, 25NEMO-3 Collaboration, 26NEMO-3 Collaboration, 27NEMO-3 Collaboration, 28NEMO-3 Collaboration, 29NEMO-3 Collaboration, 30NEMO-3 Collaboration, 31NEMO-3 Collaboration, 32NEMO-3 Collaboration, 33NEMO-3 Collaboration, 34NEMO-3 Collaboration, 35NEMO-3 Collaboration, 36NEMO-3 Collaboration, 37NEMO-3 Collaboration, 38NEMO-3 Collaboration, 39NEMO-3 Collaboration, 40NEMO-3 Collaboration, 41NEMO-3 Collaboration, 42NEMO-3 Collaboration, 43NEMO-3 Collaboration, 44NEMO-3 Collaboration, 45NEMO-3 Collaboration, 46NEMO-3 Collaboration, 47NEMO-3 Collaboration, 48NEMO-3 Collaboration, 49NEMO-3 Collaboration, 50NEMO-3 Collaboration, 51NEMO-3 Collaboration, 52NEMO-3 Collaboration, 53NEMO-3 Collaboration, 54NEMO-3 Collaboration, 55NEMO-3 Collaboration, 56NEMO-3 Collaboration, 57NEMO-3 Collaboration, 58NEMO-3 Collaboration, 59NEMO-3 Collaboration, 60NEMO-3 Collaboration, 61NEMO-3 Collaboration, 62NEMO-3 Collaboration, 63NEMO-3 Collaboration, 64NEMO-3 Collaboration, 65NEMO-3 Collaboration, 66NEMO-3 Collaboration, 67NEMO-3 Collaboration, 68NEMO-3 Collaboration, 69NEMO-3 Collaboration, 70NEMO-3 Collaboration, 71NEMO-3 Collaboration, 72NEMO-3 Collaboration, 73NEMO-3 Collaboration, 74NEMO-3 Collaboration, 75NEMO-3 Collaboration, 76NEMO-3 Collaboration, 77NEMO-3 Collaboration, 78NEMO-3 Collaboration, 79NEMO-3 Collaboration, 80NEMO-3 Collaboration, 81NEMO-3 Collaboration, 82NEMO-3 Collaboration, 83NEMO-3 Collaboration, 84NEMO-3 Collaboration, 85NEMO-3 Collaboration, 86NEMO-3 Collaboration, 87NEMO-3 Collaboration, 88NEMO-3 Collaboration, 89NEMO-3 Collaboration, 90NEMO-3 Collaboration

The NEMO-3 detector, which had been operating in the Modane Underground Laboratory from 2003 to 2010, was designed to search for neutrinoless double $\beta$ ($0\nu\beta\beta$) decay. We report final results of a search for $0\nu\beta\beta$ decays with $6.914$ kg of $^{100}$Mo using the entire NEMO-3 data set with a detector live time of $4. Read More

We generalize the definition of the polylogarithm classes to the case of commutative group schemes, both in the sheaf theoretic and the motivic setting. This generalizes and simplifies the existing cases. Read More

We prove a canonical Kuenneth decomposition of the relative motive with rational coefficients of a smooth commutative group scheme over a noetherian finite dimensional base. This paper is a follow-up of "On the motive of a commutative algebraic group" arXiv:1312.4171 Read More

We investigate the sensitivity of tritium $\beta$-decay experiments for keV-scale sterile neutrinos. Relic sterile neutrinos in the keV mass range can contribute both to the cold and warm dark matter content of the universe. This work shows that a large-scale tritium beta-decay experiment, similar to the KATRIN experiment that is under construction, can reach a statistical sensitivity of the active-sterile neutrino mixing of $\sin^2\theta \sim 10^{-8}$. Read More

Valley polarization in graphene breaks inversion symmetry and therefore leads to second-harmonic generation. We present a complete theory of this effect within a single-particle approximation. It is shown that this may be a sensitive tool to measure the valley polarization created, e. Read More

This paper studies several notions of sheaves of differential forms that are better behaved on singular varieties than K\"ahler differentials. Our main focus lies on varieties that are defined over fields of positive characteristic. We identify two promising notions: the sheafification with respect to the cdh-topology, and right Kan extension from the subcategory of smooth varieties to the category of all varieties. Read More

The influence of external pressure on the charge-density-wave (CDW) ground state of the quasi-one-dimensional two-leg ladder compound Sr$_{10}$Ca$_{4}$Cu$_{24}$O$_{41}$ has been studied by optical reflectivity measurements as a function of temperature (10 - 300~K) and pressure $P$ (0.3 - 4.3~GPa) over the spectral range 580 - 6000 cm$^1$. Read More

We prove a canonical Kunneth decomposition for the motive of a commutative group scheme over a field. Moreover, we show that this decomposition behaves under the group law just as in cohomology. We also deduce applications of the decomposition to the existence of a weight filtration, computation of any Weil cohomology theory and study of 1-motives. Read More

This paper reports the impact on confinement and power load of the high-shape 2.5MA ELMy H-mode scenario at JET of a change from an all carbon plasma facing components to an all metal wall. In preparation to this change, systematic studies of power load reduction and impact on confinement as a result of fuelling in combination with nitrogen seeding were carried out in JET-C and are compared to their counterpart in JET with a metallic wall. Read More

In this paper we investigate k-submodular functions. This natural family of discrete functions includes submodular and bisubmodular functions as the special cases k = 1 and k = 2 respectively. In particular we generalize the known Min-Max-Theorem for submodular and bisubmodular functions. Read More

In this paper we consider skew bisubmodular functions as introduced in [9]. We construct a convex extension of a skew bisubmodular function which we call Lov\'asz extension in correspondence to the submodular case. We use this extension to show that skew bisubmodular functions given by an oracle can be minimised in polynomial time. Read More

For the ITER-like wall, the JET mirror link divertor spectroscopy system was redesigned to fully cover the tungsten horizontal strike plate with faster time resolution and improved near-UV performance. Since the ITER-like wall project involves a change in JET from a carbon dominated machine to a beryllium and tungsten dominated machine with residual carbon, the aim of the system is to provide the recycling flux, equivalent, to the impinging deuterium ion flux, the impurity fluxes (C, Be, O) and tungsten sputtering fluxes and hence give information on the tungsten divertor source. In order to do this self-consistently, the system also needs to provide plasma characterization through the deuterium Balmer spectra measurements of electron density and temperature during high density. Read More

We study sheaves of differential forms and their cohomology in the h-topology. This allows to extend standard results from the case of smooth varieties to the general case. As a first application we explain the case of singularities arising in the Minimal Model Program. Read More

These are extended abstracts from an series of lectures in 1997. The text has not been updated since then. We explain the construction of the motivic polylog as published in Annette Huber, J\"org Wildeshaus, Classical Motivic Polylogarithm According to Beilinson and Deligne, Doc. Read More

2012Jul
Affiliations: 1MPIA Heidelberg, 2MPIA Heidelberg, 3MPIA Heidelberg, 4LESIA-Observatoire de Paris, 5MPIA Heidelberg, 6LESIA-Observatoire de Paris, 7MPIA Heidelberg, 8MPIA Heidelberg, 9MPIA Heidelberg, 10MPIA Heidelberg, 11MPIA Heidelberg, 12MPIA Heidelberg, 13MPIA Heidelberg, 14MPIA Heidelberg, 15MPIA Heidelberg, 16MPE, Garching, 17ESO, Garching, 18ESO, Garching, 19SIM, Lisbon, 20IPAG, Grenoble, 21LESIA-Observatoire de Paris, 22University of Cologne

GRAVITY is a second generation instrument for the VLT Interferometer, designed to enhance the near-infrared astrometric and spectro-imaging capabilities of VLTI. Combining beams from four telescopes, GRAVITY will provide an astrometric precision of order 10 micro-arcseconds, imaging resolution of 4 milli-arcseconds, and low and medium resolution spectro-interferometry, pushing its performance far beyond current infrared interfero- metric capabilities. To maximise the performance of GRAVITY, adaptive optics correction will be implemented at each of the VLT Unit Telescopes to correct for the effects of atmospheric turbulence. Read More

We show that the spectrum of Kontsevich's algebra of formal periods is a torsor under the motivic Galois group for mixed motives over the rational numbers. This assertion is stated without proof by Kontsevich and originally due to Nori. In a series of appendices, we also provide the necessary details on Nori's category of motives. Read More

Ferromagnetic materials tend to develop very complex magnetization patterns whose time evolution is modeled by the so-called Landau-Lifshitz-Gilbert equation (LLG). In this paper, we construct time-periodic solutions for LLG in the regime of soft and small ferromagnetic particles which satisfy a certain shape condition. Roughly speaking, it is assumed that the length of the particle is greater than its hight and its width. Read More

Motivated by the construction of time-periodic solutions for the three-dimensional Landau-Lifshitz-Gilbert equation in the case of soft and small ferromagnetic particles, we investigate the regularity properties of minimizers of the micromagnetic energy functional at the boundary. In particular, we show that minimizers are regular provided the volume of the particle is sufficiently small. The approach uses a reflection construction at the boundary and an adaption of the well-known regularity theory for minimizing harmonic maps into spheres. Read More

In thin ferromagnetic films, the predominance of the magnetic shape anisotropy leads to in-plane magnetizations. The simplest domain wall in this geometry is the one-dimensional Neel wall that connects two magnetizations of opposite sign by a planar 180 degree rotation. In this paper, we perturb the static Neel wall profile in order to construct time-periodic Neel wall motions governed by to the Landau-Lifshitz-Gilbert equation. Read More

Randomized rumor spreading is a classical protocol to disseminate information across a network. At SODA 2008, a quasirandom version of this protocol was proposed and competitive bounds for its run-time were proven. This prompts the question: to what extent does the quasirandom protocol inherit the second principal advantage of randomized rumor spreading, namely robustness against transmission failures? In this paper, we present a result precise up to $(1 \pm o(1))$ factors. Read More

we report the identification of a localised current structure inside the JET plasma. It is a field aligned closed helical ribbon, carrying current in the same direction as the background current profile (co-current), rotating toroidally with the ion velocity (co-rotating). It appears to be located at a flat spot in the plasma pressure profile, at the top of the pedestal. Read More

For smooth linear group schemes over $\bbZ$ we give a cohomological interpretation of the local Tamagawa measures as cohomological periods. This is in the spirit of the Tamagawa measures for motives defined by Bloch and Kato. We show that in the case of tori the cohomological and the motivic Tamagawa measures coincide, which reproves the Bloch-Kato conjecture for motives associated to tori. Read More

Broadcasting algorithms are of fundamental importance for distributed systems engineering. In this paper we revisit the classical and well-studied push protocol for message broadcasting. Assuming that initially only one node has some piece of information, at each stage every one of the informed nodes chooses randomly and independently one of its neighbors and passes the message to it. Read More

Lazard showed in his seminal work "Groupes analytiques $p$-adiques" that for rational coefficients continuous group cohomology of $p$-adic Lie-groups is isomorphic to Lie-algebra cohomology. We refine this result in two directions: firstly we extend his isomorphism under certain conditions to integral coefficients and secondly, we show that for algebraic groups, his isomorphism can be realized by differentiating locally analytic cochains. Read More

PANIC is a wide-field NIR camera, which is currently under development for the Calar Alto observatory (CAHA) in Spain. It uses a mosaic of four Hawaii-2RG detectors and covers the spectral range from 0.8-2. Read More

In this paper we define a $p$-adic analogue of the Borel regulator for the $K$-theory of $p$-adic fields. The van Est isomorphism in the construction of the classical Borel regulator is replaced by the Lazard isomorphism. The main result relates this $p$-adic regulator to the Bloch-Kato exponential and the Soul\'e regulator. Read More

This is a contribution to the ICM 2002. We explain the relation between the (equivariant) Bloch-Kato conjecture for special values of L-functions and the Main Conjecture of (non-abelian) Iwasawa theory. On the way we will discuss briefly the case of Dirichlet characters in the abelian case. Read More

The main new result is the computation of the degeneration of l-adic Eisenstein classes at the cusps. This is done by relating it to the degeneration of the elliptic polylog. These classes come from K-theory and their Hodge regulator can also be computed (see: Dirichlet motives via modula curves, on the K-theory server). Read More