Nonperturbative kinetics of electron-hole excitations in strong electric field

摘要

The nonperturbative kinetic description of the interband tunneling effect under action of the strong electric field (dynamical analog of the Zener effect) is proposed. The developed approach is based on the analogy with the Sauter-Schwinger effect and its dynamical analog in QED. The kinetic equation for quasiparticle excitations is derived on the dynamical basis in the framework of the oscillator representation. The numerical estimates are made for some simple cases of external field.