Fluctuating relativistic dissipative hydrodynamics as a gauge theory

Autor(es)

Dore, Travis ; Gavassino, Lorenzo ; Montenegro, David ; Shokri, Masoud ; Torrieri, Giorgio

• Tipo de documento: Artigo Científico
• Fonte: ANNALS OF PHYSICS; v. 442, p. 26-pg., 2022-05-18.

Resumo

We argue that different formulations of hydrodynamics are related to uncertainties in the definitions of local thermodynamic and hydrodynamic variables. We show that this ambiguity can be resolved by viewing different formulations of hydrodynamics as particular "gauge choices"which lead to the same physical behavior of the system. Using the example of bulk viscosity, we show that Bemfica-Disconzi-Noronha-Kovtun (BDNK) and Israel-Stewart hydrodynamics are particular "gauge choices"of this type, related by a well-defined transformation of thermodynamic and hydrodynamic variables. We argue that this gauge ambiguity is necessary to ascertain the causality of stochastic hydrodynamic evolution and conjecture that it could explain the applicability of hydrodynamics outside its expected regime of validity since far from equilibrium and close to equilibrium may be related through transformations of this type. (c) 2022 Elsevier Inc. All rights reserved. (AU)

• Processo FAPESP: 21/01700-2 - Uma teoria de campo eficaz de equilíbrio relativístico local
• Beneficiário: Donato Giorgio Torrieri
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 17/05685-2 - Física hadrônica em colisões nucleares de altas energias
• Beneficiário: Jun Takahashi
• Modalidade de apoio: Auxílio à Pesquisa - Projetos Especiais