| Autor: |
Sheldon Goldstein, Takashi Hara, Hal Tasaki |
| Jazyk: |
angličtina |
| Rok vydání: |
2015 |
| Předmět: |
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| Zdroj: |
New Journal of Physics, Vol 17, Iss 4, p 045002 (2015) |
| Druh dokumentu: |
article |
| ISSN: |
1367-2630 |
| DOI: |
10.1088/1367-2630/17/4/045002 |
| Popis: |
The fact that macroscopic systems approach thermal equilibrium may seem puzzling, for example, because it may seem to conflict with the time-reversibility of the microscopic dynamics. We here prove that in a macroscopic quantum system for a typical choice of ‘nonequilibrium subspace’, any initial state indeed thermalizes, and in fact does so very quickly, on the order of the Boltzmann time ${{\tau }_{{\rm B}}}:=h/({{k}_{{\rm B}}}T)$ . Therefore what needs to be explained is, not that macroscopic systems approach thermal equilibrium, but that they do so slowly. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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