Monday, October 29, 2012

1210.6993 (Mohammad Edalati et al.)

Quantum Fluctuations in Holographic Theories with Hyperscaling Violation    [PDF]

Mohammad Edalati, Juan F. Pedraza, Walter Tangarife Garcia
In this short note we use holographic methods to study the response of quantum critical points with hyperscaling violation to a disturbance caused by a massive charged particle. We give analytical expressions for the two-point functions of the fluctuations of the massive probe as a function of arbitrary (allowed) values of the hyperscaling violation exponent {\theta} and the dynamical exponent z. We point out the existence of markedly different behaviors of the two-point functions in the parameter space of {\theta} and z at late times. In particular, as expected, the late-time dynamics of the probe becomes independent of its inertial mass in the range z+2{\theta}/d>2.
View original: http://arxiv.org/abs/1210.6993

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