The solution is found for the transport equation for a Feynman polaron having arbitrary coupling interacting with the acoustic oscillations in an alternating electric field. In the low-frequency case, this solution cannot be normalized — there are runaway polarons. For high frequencies, this effect is absent. Equations are obtained for the electrical conductivity of polaron semiconductors for various particular cases, including the runaway regime.
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Shmelev, G.M., Tsurkan, G.I. Polaron in a strong alternating electric field. Soviet Physics Journal 22, 378–382 (1979). https://doi.org/10.1007/BF00895656
- Electrical Conductivity
- Transport Equation
- Acoustic Oscillation
- Arbitrary Coupling
- Runaway Regime