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arXiv · 2404.01968

Hydrodynamics as sound-speed approaches light-speed

Guy D. Moore
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Abstract

I present the simplest 3+1 dimensional quantum field theory for which the speed of sound can be arbitrarily close to the speed of light. Examining the hydrodynamics, I find cases where the shear viscosity is finite, but the "shear relaxation coefficient" appears always to be divergently large.

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Guy D. Moore. 2024-04-02. Hydrodynamics as sound-speed approaches light-speed. https://arxiv.org/abs/2404.01968

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