On the propagation of a perturbation in an anharmonic system
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🧮 math-ph
math.MP
keywords
anharmonicequilibriumsystemachievedboundcombiningcontroldisturbances
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We give a not trivial upper bound on the velocity of disturbances in an infinitely extended anharmonic system at thermal equilibrium. The proof is achieved by combining a control on the non equilibrium dynamics with an explicit use of the state invariance with respect to the time evolution.
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