TEMPERATURE-FLUCTUATIONS IN THE CANONICAL ENSEMBLE

被引：108

作者：

CHUI, TCP

SWANSON, DR

ADRIAANS, MJ

NISSEN, JA

LIPA, JA

机构：

[1] Department of Physics, Stanford University, Stanford

来源：

PHYSICAL REVIEW LETTERS | 1992年 / 69卷 / 21期

关键词：

D O I：

10.1103/PhysRevLett.69.3005

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report the first quantitative measurements of spontaneous temperature fluctuations in a physical system well modeled by a canonical ensemble. Using superconducting magnetometers and a carefully controlled thermal environment, we have measured the noise spectra of paramagnetic salt thermometers that were coupled to thermal reservoirs at 2 K. The noise spectra were found to be in very good agreement with the predictions of the fluctuation-dissipation theorem. Our observations are at variance with some interpretations of fluctuations in the canonical ensemble.

引用

页码：3005 / 3008

页数：4

共 20 条

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