Universal behaviors of speed of sound from holography

Yi Yang; Pei Hung Yuan

doi:10.1103/PhysRevD.97.126009

Universal behaviors of speed of sound from holography

Yi Yang, Pei Hung Yuan

Department of Electrophysics

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

We investigate the speed of sound in (d+1)-dimensional quantum field theory by studying its dual (d+2)-dimensional gravity theory from gauge/gravity correspondence. Instead of the well-known conformal limit cs2→1/d at high temperature, we reveal two more universal quantities in various limits: cs2→(d-1)/16π at low temperature and cs2→(d-1)/16πd at large chemical potential.

Original language	English
Article number	126009
Journal	Physical Review D
Volume	97
Issue number	12
DOIs	https://doi.org/10.1103/PhysRevD.97.126009
State	Published - 15 Jun 2018

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10.1103/PhysRevD.97.126009

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abstract = "We investigate the speed of sound in (d+1)-dimensional quantum field theory by studying its dual (d+2)-dimensional gravity theory from gauge/gravity correspondence. Instead of the well-known conformal limit cs2→1/d at high temperature, we reveal two more universal quantities in various limits: cs2→(d-1)/16π at low temperature and cs2→(d-1)/16πd at large chemical potential.",

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Universal behaviors of speed of sound from holography

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