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arXiv · 0905.0900

Holography and the speed of sound at high temperatures

Paul M. Hohler·Mikhail A. Stephanov
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Abstract

We show that in a general class of strongly interacting theories at high temperatures the speed of sound approaches the conformal value c_s^2=1/3 universally from_below_. This class includes theories holographically dual to a theory of gravity coupled to a single scalar field, representing the operator of the scale anomaly.

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Paul M. Hohler, Mikhail A. Stephanov. 2009-09-15. Holography and the speed of sound at high temperatures. https://doi.org/10.1103/physrevd.80.066002

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