Zeitschrift für Naturforschung / A / 32 (1977)
نویسنده
چکیده
Fr. Kaiser and M. Wagner Institute of Theoretical Physics, University of Stuttgart (Z. Naturforsch. 32a, 375-382 [1977] ; rceived March 17, 1977) The Peierls-Boltzmann transport equation for phonons is re-formulated and modified by means of sequences of transport and statistical postulates. The transition probabilities within the collision term are expanded in a comprehensive way. The resulting nonlinear kinetic equations are applied to a simple model system, i. e. a local excitation coupled to a transport system. The steady state solutions reveal the possibility of a hysteresis-type of "transport phase transitions" from the "thermo dynamic" branch to a "nonthermodynamic" one via a cumulative excitation. The stability of the solutions is checked and the approximations are discussed.
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Zeitschrift für Naturforschung / A / 32 (1977)
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