# Hugh P. Osborn

## Publications Authored By Hugh P. Osborn

**Authors:**Joseph E. Rodriguez, George Zhou, Phillip A. Cargile, Daniel J. Stevens, Hugh P. Osborn, Benjamin J. Shappee, Phillip A. Reed, Michael B. Lund, Howard M. Relles, David W. Latham, Jason Eastman, Keivan G. Stassun, Allyson Bieryla, Gilbert A. Esquerdo, Perry Berlind, Michael L. Calkins, Andrew Vanderburg, Eric Gaidos, Megan Ansdell, Robert J. Siverd, Thomas G. Beatty, Christopher S. Kochanek, Joshua Pepper, B. Scott Gaudi, Richard G. West, Don Pollacco, David James, Rudolf B. Kuhn, Krzysztof Z. Stanek, Thomas W. S. Holoien, Jose L. Prieto, Samson A. Johnson, Anthony Sergi, Nate McCrady, John A. Johnson, Jason T. Wright, Robert A. Wittenmyer, Jonathan Horner

We present the discovery of two extended $\sim$0.12 mag dimming events of the weak-lined T-Tauri star V1334. The start of the first event was missed but came to an end in late 2003, and the second began in February 2009, and continues as of November 2016. Read More

As an exoplanet orbits its host star it reflects and emits light, forming a distinctive phase curve. By observing this light, we can study the atmosphere and surface of distant planets. The planets in our Solar System show a wide range of atmospheric phenomena, with stable wind patterns, changing storms, and evolving anomalies. Read More

For theories with multiple couplings the perturbative $\beta$-functions for scalar, Yukawa couplings are expressible in terms of contributions corresponding to one particle irreducible graphs and also contributions which are one particle reducible depending on the anomalous dimension. Here we discuss redefinitions, or changes of scheme, which preserve this structure. The redefinitions allow for IPR contributions of a specific form, as is necessary to encompass the relation between MS and momentum subtraction renormalisation schemes. Read More

The coefficient $C_T$ of the conformal energy-momentum tensor two-point function is determined for the non-unitary scalar CFTs with four- and six-derivative kinetic terms. The results match those expected from large-$N$ calculations for the CFTs arising from the $O(N)$ non-linear sigma and Gross-Neveu models in specific even dimensions. $C_T$ is also calculated for the CFT arising from $(n-1)$-form gauge fields with derivatives in $2n+2$ dimensions. Read More

**Authors:**Jessica J. Spake, David J. A. Brown, Amanda P. Doyle, Guillaume Hébrard, James McCormac, David J. Armstrong, Don Pollacco, Yilen Gómez Maqueo Chew, David R. Anderson, Susana C. C. Barros, François Bouchy, Panayotis Boumis, Giovanni Bruno, Andrew Collier Cameron, Bastien Courcol, Guy R. Davies, Francesca Faedi, Coel Hellier, James Kirk, Kristine W. F. Lam, Alexios Liakos, Tom Louden, Pierre F. L. Maxted, Hugh P. Osborn, Enric Palle, Jorge Prieto Arranz, Stéphane Udry, Simon R. Walker, Richard G. West, Peter J. Wheatley

**Category:**Earth and Planetary Astrophysics

We report the discovery of a new transiting planet from the WASP survey. WASP-135b is a hot Jupiter with a radius of 1.30 pm 0. Read More

**Authors:**David J. Armstrong, Alexandre Santerne, Dimitri Veras, Susana C. C. Barros, Olivier Demangeon, Jorge Lillo-Box, James McCormac, Hugh P. Osborn, Maria Tsantaki, José-Manuel Almenara, David Barrado, Isabelle Boisse, Aldo S. Bonomo, François Bouchy, David J. A. Brown, Giovanni Bruno, Javiera Rey Cerda, Bastien Courcol, Magali Deleuil, Rodrigo F. Díaz, Amanda P. Doyle, Guillaume Hébrard, James Kirk, Kristine W. F. Lam, Don L. Pollacco, Arvind Rajpurohit, Jessica Spake, Simon R. Walker

**Category:**Earth and Planetary Astrophysics

The K2 mission has recently begun to discover new and diverse planetary systems. In December 2014 Campaign 1 data from the mission was released, providing high-precision photometry for ~22000 objects over an 80 day timespan. We searched these data with the aim of detecting further important new objects. Read More

The tensors which may be defined on the conformal manifold for six dimensional CFTs with exactly marginal operators are analysed by considering the response to a Weyl rescaling of the metric in the presence of local couplings. It is shown that there are three symmetric two index tensors only one of which satisfies any positivity conditions. The general results are specialised to the six dimensional conformal theory defined by free two-forms and also to the interacting scalar $\phi^3$ theory at two loops which preserves conformal invariance to this order. Read More

Conformal blocks in any number of dimensions depend on two variables z, zbar. Here we study their restrictions to the special "diagonal" kinematics z = zbar, previously found useful as a starting point for the conformal bootstrap analysis. We show that conformal blocks on the diagonal satisfy ordinary differential equations, third-order for spin zero and fourth-order for the general case. Read More

The response of the one loop effective action for a gauge theory with local couplings $g(x),\theta(x)$ under a local Weyl rescaling of the background metric is calculated. Apart from terms which may be removed by local contributions to the effective action the result is compatible with $Sl(2,R)$ symmetry acting on $g,\theta$. Two loop effects are also discussed. Read More

The implications of N=1 superconformal symmetry for four dimensional quantum field theories are studied. Superconformal covariant expressions for two and three point functions of quasi-primary superfields of arbitrary spin are found and connected with the operator product expansion. The general formulae are specialised to cases involving a scalar superfield L, which contains global symmetry currents, and the supercurrent, which contains the energy momentum tensor, and the consequences of superconformal Ward identities analysed. Read More