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- California Institute of TechnologyUS53 papers
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17 papers · 1 filter
S-Wave Scattering of Fermion Revisited
Anisur rahaman
A model where a Dirac fermion is coupled to background dilaton field is considered to study s-wave scattering of fermion by a back ground dilaton black hole. It is found that an un…
Chiral anomalies and AdS/CMT in two dimensions
Kristan Jensen
I clarify some recent confusion regarding the holographic description of finite-density systems in two dimensions. Notably, the chiral anomaly for symmetry currents in 2d conformal…
Band-aid for information loss from black holes
Werner Israel, Zinkoo Yun
We summarize, simplify and extend recent work showing that small deviations from exact thermality in Hawking radiation, first uncovered by Kraus and Wilczek, have the capacity to c…
Bounds on Tensor wave and Twisted Inflation
Sudhakar Panda, M. Sami, John Ward
We study the bounds on tensor wave in a class of twisted inflation models where -branes are wrapped on cycles in the compact manifold and wrap the KK-direction in the corr…
Quintessence and phantom dark energy from ghost D-branes
Emmanuel N. Saridakis, John Ward
We present a novel dark energy candidate, based upon the existence and dynamics of Ghost D-branes in a warped compactification of type IIB string theory. Gp-branes cancel the combi…
Black holes and non-relativistic quantum systems
Pavel Kovtun, Dominik Nickel
We describe black holes in d+3 dimensions, whose thermodynamic properties correspond to those of a scale invariant non-relativistic d+1 dimensional quantum system with dynamical ex…