Journal
PHYSICAL REVIEW LETTERS
Volume 109, Issue 10, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.109.101601
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Funding
- NSERC, Canada
- U.S. Department of Energy [DE-FGO2-96ER40956]
- European Union [FP7-REGPOT-2008-1-CreteHEPCosmo-228644, PERG07-GA-2010-268246]
- EU program Thalis ESF/NSRF
- Taub Foundation
- ISF [495/11]
- BSF [2014350]
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We present a generating functional which describes the equilibrium thermodynamic response of a relativistic system to external sources. A variational principle gives rise to constraints on the response parameters of relativistic hydrodynamics without making use of an entropy current. Our method reproduces and extends results available in the literature. It also provides a technique for efficiently computing n-point zero-frequency correlation functions within the hydrodynamic derivative expansion without the need to explicitly solve the equations of hydrodynamics.
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