| Issue |
EPL
Volume 88, Number 2, October 2009
|
|
|---|---|---|
| Article Number | 20005 | |
| Number of page(s) | 4 | |
| Section | General | |
| DOI | https://doi.org/10.1209/0295-5075/88/20005 | |
| Published online | 02 November 2009 | |
Inverse-temperature 4-vector in special relativity
Department of Physics, Zhejiang University of Technology - Hangzhou 310032, China
Received:
5
October
2009
Accepted:
21
October
2009
There exist several prescriptions for identifying the notion of temperature in special relativity. We argue that the inverse-temperature 4-vector 
is the only viable option from the laws of thermodynamics, and
is a future-directed timelike 4-vector. Using a superfluidity thought experiment, one can show that
is not necessarily along the time direction of the comoving frame of the system, as is usually thought. It is conjectured that, for an isolated system, the 4-vector is determined from the entropy-maximum principle.
PACS: 05.70.-a – Thermodynamics / 03.30.+p – Special relativity / 05.90.+m – Other topics in statistical physics, thermodynamics, and nonlinear dynamical systems
© EPLA, 2009
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