MAGNETOABSORPTION OF LARGE BIPOLARONS

The magnetoabsorption of large bipolarons is investigated by the path- integral method. The response of a bipolaron in a magnetic field to an external electromagnetic field is derived using a generalized anisotr opic modelling influence phase in the framework of the memory-function approach. The resulting magnetoabsorption spectrum of large bipolaron s is presented for special values of the electron-phonon coupling cons tant and the magnetic field taken as example and analysed. Its general feature is that this spectrum consists of a series of relatively narr ow peaks. The peculiarities of the magnetoabsorption spectrum of the b ipolaron as a function of the frequency of the electromagnetic field a re attributed to the transitions involving scattering states or intern al excited bipolaron states.