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Reply to “On the cutoff parameter in the translation-invariant theory of the strong coupling polaron”

Klimin, S.N. ; Devreese, J.T.

Solid state communications, 2013-01, Vol.153 (1), p.58-59 [Periódico revisado por pares]

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Título:
Reply to “On the cutoff parameter in the translation-invariant theory of the strong coupling polaron”
Autor: Klimin, S.N. ; Devreese, J.T.
Assuntos: Condensed matter: electronic structure, electrical, magnetic, and optical properties ; D. Bipolarons ; D. Fröhlich Hamiltonian ; D. Polarons ; Electron states ; Exact sciences and technology ; Physics ; Polarons and electron-phonon interactions
É parte de: Solid state communications, 2013-01, Vol.153 (1), p.58-59
Descrição: The present work is a reply to the paper [1]. It is proven that the argumentation of Refs. [1] is inconsistent. The variational functional for the polaron ground state energy considered in Ref. [1] contains an incomplete recoil energy. Since the variational functional of Ref. [1] is incomplete, it is not proven to provide a variational upper bound for the polaron ground-state energy. The same conclusion follows also for the bipolaron ground-state energy. ► The bipolaron theory of SSC 152, 621 (2012) is proven to fail in the strong-coupling regime. ► The ground-state energy obtained within that approach is not a proven upper bound. ► The range of applicability of the Tulubpolaron approach is more clearly defined.
Editor: Kidlington: Elsevier Ltd
Idioma: Inglês

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