Large-radius Holstein polaron and the problem of spontaneous symmetry breaking

Abstract

A translation-invariant solution is found for a large-radius Holstein polaron whose energy in the strong coupling limit is lower than that obtained by Holstein. The wave function corresponding to this solution is delocalized. A conclusion is made about the absence of a spontaneous symmetry breaking in the quantum system discussed.

20 pages, 4 figures. Appendix A and references 24, 25, 26 were added. Progress of Theoretical and Experimental Physics, accepted

References in corpus (2)

• Translation-invariant bipolarons and the problem of high-temperature superconductivity
• The Virial Theorem and the Ground State Problem in Polaron Theory

Cited by in corpus (2)

• A translation invariant bipolaron in the Holstein model and superconductivity
• Pekar's Ansatz and the Strong Coupling Problem in Polaron Theory