Towards a dynamical temperature of finite Hamiltonian systems

Shiwei Yan, Qi Wang and Shengjun Liu

Physica A: Statistical Mechanics and its Applications, 2009, vol. 388, issue 24, 4943-4949

Abstract: With the aid of numerical simulations of the β Fermi-Pasta-Ulam (FPU) system, we compare the different definitions of dynamical temperature for Hamiltonian systems. We have shown that each definition gives different values of temperature for a system with a small number of degrees of freedom (DOF). Only for systems with a sufficiently large number of DOF, do all the definitions of dynamical temperature approach the same value.

Keywords: Dynamical temperature; Finite system; Number of degrees of freedom; Ergodicity (search for similar items in EconPapers)
Date: 2009
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:388:y:2009:i:24:p:4943-4949

DOI: 10.1016/j.physa.2009.08.028

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