The effect of dispersive optical phonons on the behaviour of a Holstein polaron

We use the approximation-free Bold Diagrammatic Monte Carlo technique to study the effects of a finite dispersion of the optical phonon mode on the properties of the Holstein polaron, especially its effective mass. For weak electron-phonon coupling the effect is very small, but it becomes significan...

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Veröffentlicht in:	arXiv.org 2013-08
Hauptverfasser:	Marchand, Dominic J J, Berciu, Mona
Format:	Artikel
Sprache:	eng
Schlagworte:	Brillouin zones Coupling Curvature Dispersion Optical properties Phonons Physics - Strongly Correlated Electrons Polarons
Online-Zugang:	Volltext
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