Temperature of a Hamiltonian system given as the effective temperature of a nonequilibrium steady-state Langevin thermostat

Kumiko Hayashi*, Mitsunori Takano

*この研究の対応する著者

研究成果: Article査読

7 被引用数 (Scopus)

抄録

In nonequilibrium steady states (NESS) far from equilibrium, it is known that the Einstein relation is violated. Then, the ratio of the diffusion coefficient to the mobility is called an effective temperature, and the physical relevance of this effective temperature has been studied in several works. Although the physical relevance is not yet completely clear, it has been found that the role of an effective temperature in NESS is indeed analogous to that of the temperature in equilibrium systems in a number of respects. In this paper, we find further evidence establishing this analogy. We employ a nonequilibrium Langevin system as a thermostat for a Hamiltonian system and find that the kinetic temperature of this Hamiltonian system is equal to the effective temperature of the thermostat.

本文言語English
論文番号050104
ジャーナルPhysical Review E - Statistical, Nonlinear, and Soft Matter Physics
76
5
DOI
出版ステータスPublished - 2007 11 28

ASJC Scopus subject areas

  • 統計物理学および非線形物理学
  • 統計学および確率
  • 凝縮系物理学

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