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Holographic thermal DC response in the hydrodynamic limit.

Banks, Elliot and Donos, Aristomenis and Gauntlett, Jerome P and Griffin, Tom and Melgar, Luis (2017) 'Holographic thermal DC response in the hydrodynamic limit.', Classical and quantum gravity., 34 (4). 045001.


We consider black hole solutions of Einstein gravity that describe deformations of CFTs at finite temperature in which spatial translations have been broken explicitly. We focus on deformations that are periodic in the non-compact spatial directions, which effectively corresponds to considering the CFT on a spatial torus with a non-trivial metric. We apply a DC thermal gradient and show that in a hydrodynamic limit the linearised, local thermal currents can be determined by solving linearised, forced Navier–Stokes equations for an incompressible fluid on the torus. We also show how sub-leading corrections to the thermal current can be calculated as well as showing how the full stress tensor response that is generated by the DC source can be obtained. We also compare our results with the fluid-gravity approach.

Item Type:Article
Full text:(AM) Accepted Manuscript
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Publisher statement:This is an author-created, un-copyedited version of an article published in Classical and quantum gravity. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at 10.1088/1361-6382/aa51df
Date accepted:06 December 2016
Date deposited:11 July 2017
Date of first online publication:17 January 2017
Date first made open access:17 January 2018

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