Interaction of Phonons and Yhermoequilibrium of a Crystal
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Abstract:
The interaction of phonons and the thermoequilibrium of a crystal are analyzed with Boltzmann equation and Landau equation.The thermoequilibrium of a crystal is the result of interaction of phonons.There is no interaction of phonons in the harmonic approximation. A cbystal can not reach the state of thermoequilibrium in the harmonic approximation.
