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arXiv · 1303.7342

The spectral function in a strongly coupled, thermalising CFT

Alice Bernamonti·Ben Craps·Joris Vanhoof
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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.

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Alice Bernamonti, Ben Craps, Joris Vanhoof. 2013-03-29. The spectral function in a strongly coupled, thermalising CFT. https://arxiv.org/abs/1303.7342

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