Physics – Condensed Matter – Statistical Mechanics
Scientific paper
2007-07-28
Phys. Rev. E 76, 050104 (2007)
Physics
Condensed Matter
Statistical Mechanics
4 pages, to appear Phys. Rev. E (Rapid Communications)
Scientific paper
10.1103/PhysRevE.76.050104
In non-equilibrium 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 non-equilibrium 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.
Hayashi Kumiko
Takano Mitsunori
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