On the canonical distributions of a thermal particle in a generalized velocity-dependent potential
On the canonical distributions of a thermal particle in a generalized velocity-dependent potential
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关于广义速度相关势中热粒子的正则分布
DOI:
10.1016/j.physa.2019.123273
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发表时间:
2020
期刊:
影响因子:
--
通讯作者:
Matsuzoe Hiroshi
中科院分区:
文献类型:
--
作者:
Wada Tatsuaki;Scarfone Antonio M.;Matsuzoe Hiroshi
We consider a thermal particle diffusing in velocity-space under a generalized velocity-dependent potential characterized by the inverse hyperbolic sine function of the particle velocity v and the control parameter v c. This velocity-dependent potential can be considered as a deformation of Rayleigh’s dissipation function. The stationary state of the corresponding Fokker–Planck equation is shown to be a canonical probability distribution. Furthermore an appropriate re-parameterization relates this stationary state with the κ-deformed Gaussian. A possible interpretation of the deformation parameter κ is proposed.