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- W4381586979 abstract "We investigate ergodicity, chaos and thermalization for a one-dimensional classical gas of hard rods confined to an external quadratic or quartic trap, which breaks microscopic integrability. To quantify the strength of chaos in this system, we compute its maximal Lyapunov exponent numerically. The approach to thermal equilibrium is studied by considering the time evolution of particle position and velocity distributions and comparing the late-time profiles with the Gibbs state. Remarkably, we find that quadratically trapped hard rods are highly non-ergodic and do not resemble a Gibbs state even at extremely long times, despite compelling evidence of chaos for four or more rods. On the other hand, our numerical results reveal that hard rods in a quartic trap exhibit both chaos and thermalization, and equilibrate to a Gibbs state as expected for a nonintegrable many-body system." @default.
- W4381586979 created "2023-06-22" @default.
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- W4381586979 date "2023-06-20" @default.
- W4381586979 modified "2023-09-26" @default.
- W4381586979 title "Unusual ergodic and chaotic properties of trapped hard rods" @default.
- W4381586979 doi "https://doi.org/10.48550/arxiv.2306.11713" @default.
- W4381586979 hasPublicationYear "2023" @default.
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