The spectral function in a strongly coupled, thermalising CFT
High Energy Physics - Theory
2013-04-01 v1
Abstract
In relation to the fluctuation-dissipation theorem, we discuss a time-dependent notion of spectral function and effective temperature. Extending recent results from arXiv:1212.6066, we work out these quantities in a two-dimensional thermalising CFT dual to AdS3-Vaidya spacetime which interpolates between a black brane geometry at early times and a higher temperature black brane at late times. The computation is carried out in the gravitational holographic dual in the geodesic approximation and using a non-standard analytic continuation.
Cite
@article{arxiv.1303.7342,
title = {The spectral function in a strongly coupled, thermalising CFT},
author = {Alice Bernamonti and Ben Craps and Joris Vanhoof},
journal= {arXiv preprint arXiv:1303.7342},
year = {2013}
}
Comments
14 pages, 4 figures, contribution to the proceedings of the 2012 Corfu Summer Institute and the XVIIIth European Workshop on String Theory