Measuring Nonequilibrium Temperature of Forced Oscillators
Statistical Mechanics
2007-05-23 v2
Abstract
The meaning of temperature in nonequilibrium thermodynamics is considered by using a forced harmonic oscillator in a heat bath, where we have two effective temperatures for the position and the momentum, respectively. We invent a concrete model of a thermometer to testify the validity of these different temperatures from the operational point of view. It is found that the measured temperature depends on a specific form of interaction between the system and a thermometer, which means the zeroth law of thermodynamics cannot be immediately extended to nonequilibrium cases.
Cite
@article{arxiv.cond-mat/0207378,
title = {Measuring Nonequilibrium Temperature of Forced Oscillators},
author = {Takahiro Hatano and David Jou},
journal= {arXiv preprint arXiv:cond-mat/0207378},
year = {2007}
}
Comments
8 pages