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原文連結
論文資訊
- 類型：已發表論文
- 日期：2017-02-07
摘要
The relaxation to equilibrium of two long-range-interacting Fermi-Pasta-Ulam-like models (beta type) in thermal contact is numerically studied. These systems, with different sizes and energy densities, are coupled to each other by a few thermal contacts which are short-range harmonic springs. By using the kinetic definition of temperature, we compute the time 演化 of temperature and energy density of the two systems. Eventually, for some time t > t(eq), the temperature arid energy density of the coupled system equilibrate to values consistent with standard Boltzmann-Gibbs thermostatistics. The equilibration time t(eq) depends on the system size N as t(eq) similar to N-gamma where gamma similar or equal to 1.8. We compute the velocity distribution P(v) of the oscillators of the two systems du
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