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arXiv · 1903.08729

Relativistic fluid dynamics and its extensions as an effective field theory

David Montenegro·Radoslaw Ryblewski·Giorgio Torrieri
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Abstract

We examine hydrodynamics from the perspective of an effective field theory. The microscopic scale in this case is the thermalization scale, and the macroscopic scale is the gradient, with thermal fluctuations playing the role of $\hbar$. We argue that this method can be applied both, to consistently include thermal fluctuations in the theory, and to extend hydrodynamics to systems whose microscopic structure is non-trivial. For the latter, we discuss the case of spin polarization and gauge theories.

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David Montenegro, Radoslaw Ryblewski, Giorgio Torrieri. 2019-03-20. Relativistic fluid dynamics and its extensions as an effective field theory. https://doi.org/10.5506/aphyspolb.50.1275

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