On the kinetic temperature of a one-dimensional crystal on the long-time scale

A.A. Lykov and A.S. Murachev

Physica A: Statistical Mechanics and its Applications, 2024, vol. 654, issue C

Abstract: We investigate the dynamics of the kinetic temperature of a finite one-dimensional harmonic chain, the evolution of which is initiated by a thermal shock. We demonstrate that the kinetic temperature returns arbitrarily close to its initial state (the one immediately following the thermal shock) infinitely many times, and we give an estimate for the time elapsed until the recurrence. This assertion is closely related to the Poincare recurrence theorem and we discuss their relation. To estimate the recurrence time we use its averaging along system’s trajectory and provide a rigorous mathematical definition of the mean recurrence time. It turns out that the mean recurrence time exponentially increases with the number of particles in the chain. A connection is established between this problem and the local theorems of large deviations theory.

Keywords: Kinetic temperature; Poincare recurrence; Pure crystals; Thermal processes (search for similar items in EconPapers)
Date: 2024
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:654:y:2024:i:c:s037843712400623x

DOI: 10.1016/j.physa.2024.130114

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