Eur. Phys. J. B 8, 339-351 (1999)
https://doi.org/10.1007/s100510050699

Normal state properties of an interacting large polaron gas

¹ Dipartimento di Scienze Fisiche, Università di Salerno, 84081 Baronissi (Salerno), Italy
² Dipartimento di Scienze Fisiche, Università di Napoli 80125 Napoli, Italy

Received: 13 May 1998
Published online: 15 April 1999

Abstract

A simple approach to the many-polaron problem for both weak and intermediate electron-phonon coupling and valid for densities much smaller than those typical of metals is presented. Within the model the total energy, the collective modes and the single-particle properties are studied and compared with the available theories. It is shown the occurrence of a charge density wave instability in the intermediate coupling regime.