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Rigorous Ground State Energy of a Linearized Model of a Polaron in a Magnetic Field
Author(s) -
Brosens F.,
Devreese J. T.
Publication year - 1988
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221450217
Subject(s) - polaron , ground state , feynman diagram , magnetic field , physics , coupling constant , quantum electrodynamics , condensed matter physics , field (mathematics) , constant (computer programming) , expression (computer science) , electron , magnetic energy , quantum mechanics , mathematics , magnetization , computer science , pure mathematics , programming language
An explicit analytical expression is derived for the ground state energy of a linearized polaron model in a constant and uniform magnetic field. In this model, the validity of the Feynman inequality in a magnetic field is investigated. In a fixed magnetic field, it is shown that even for arbitrarily small electron—phonon coupling, the presence of a magnetic field is prohibitive for the application of the Feynman inequality.