Analytic peculiarities of the polaron mass operator in the first two orders of the coupling constant

• Veröffentlicht in: Condensed Matter Physics
• Datum: 1998
• ISSN: 1607-324X
• Hauptverfasser: Tkach, M., Voitsekhivska, O., Val', O.
• Format: Artikel
• Sprache: Englisch
• Veröffentlicht: Інститут фізики конденсованих систем НАН України 1998
• Online Zugang: https://nasplib.isofts.kiev.ua/handle/123456789/118934
• Назва журналу: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Zitieren: Analytic peculiarities of the polaron mass operator in the first two orders of the coupling constant / M. Tkach, O. Voitsekhivska, O. Val' // Condensed Matter Physics. — 1998. — Т. 1, № 2(14). — С. 401-408. — Бібліогр.: 5 назв. — англ.

The exact analytic expression for the polaron mass operator in the second
 order of the coupling constant is established for the first time. It holds in the
 whole energy scale. The peculiarities of the mass operator are analysed.
 The renormalized polaron energy spectrum is...