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Dissipation in holographic superfluids

Donos, Aristomenis and Kailidis, Polydoros and Pantelidou, Christiana (2021) 'Dissipation in holographic superfluids.', Journal of high energy physics., 2021 (9). p. 134.


We study dissipation in holographic superfluids at finite temperature and zero chemical potential. The zero overlap with the heat current allows us to isolate the physics of the conserved current corresponding to the broken global U(1). By using analytic techniques we write constitutive relations including the first non-trivial dissipative terms. The corresponding transport coefficients are determined in terms of thermodynamic quantities and the black hole horizon data. By analysing their behaviour close to the phase transition we show explicitly the breakdown of the hydrodynamic expansion. Finally, we study the pseudo-Goldstone mode that emerges upon introducing a perturbative symmetry breaking source and we determine its resonant frequency and decay rate.

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Publisher statement:Open Access. This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.
Date accepted:02 September 2021
Date deposited:24 January 2022
Date of first online publication:21 September 2021
Date first made open access:24 January 2022

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