# Tolman-like temperature gradients in stationary spacetimes

@article{Santiago2018TolmanlikeTG,
title={Tolman-like temperature gradients in stationary spacetimes},
author={Jessica Santiago and Matt Visser},
journal={Physical Review D},
year={2018}
}
• Published 8 July 2018
• Physics
• Physical Review D
It is (or should be) well known that specification of a heat bath requires both a temperature and a 4-velocity, the rest frame of the heat bath. In static spacetimes there is a very natural and unique candidate for the 4-velocity of the heat bath, the normalized timelike Killing vector. However in stationary non-static spacetimes the situation is considerably more subtle, and several different "natural" 4-velocity fields suitable for characterizing the rest frame of a heat bath can be defined…
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