Physics – Condensed Matter – Statistical Mechanics
Scientific paper
2003-09-11
Physics
Condensed Matter
Statistical Mechanics
4 pages, no figure
Scientific paper
10.1103/PhysRevLett.91.124101
We consider a system of globally coupled rotors, described by a set of Langevin equations, and examine stability of the incoherent phase. The corresponding Fokker-Planck equation, providing a unified description of microcanonical and canonical ensembles, bears a few solutions, depending upon the ensemble. It is found that the stability of each solution varies differently with the temperature, revealing the inequivalence between the two ensembles. This also suggests a physical explanation of the quasi-stationarity observed in recent numerical results.
Choi Jaedong
Choi Min-Young
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