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arXiv · 1705.07587

Universal Behaviors of Speed of Sound from Holography

Yi Yang·Pei-Hung Yuan
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Abstract

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

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Yi Yang, Pei-Hung Yuan. 2017-05-22. Universal Behaviors of Speed of Sound from Holography. https://doi.org/10.1103/physrevd.97.126009

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