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Variational path-integral treatment of a translation invariant many-polaron system

F. Brosens·S. N. Klimin·J. T. Devreese
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Abstract

A translation invariant N-polaron system is investigated at arbitrary electron-phonon coupling strength, using a variational principle for path integrals for identical particles. An upper bound for the ground state energy is found as a function of the number of spin up and spin down polarons, taking the electron-electron interaction and the Fermi statistics into account. The resulting addition energies and the criteria for multipolaron formation are discussed.

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F. Brosens, S. N. Klimin, J. T. Devreese. 2006-01-24. Variational path-integral treatment of a translation invariant many-polaron system. https://doi.org/10.1103/physrevb.71.214301

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