Ground state features of the Frohlich model

Abstract

Following the ideas behind the Feynman approach, a variational wave function is proposed for the Fröhlich model. It is shown that it provides, for any value of the electron-phonon coupling constant, an estimate of the polaron ground state energy better than the Feynman method based on path integrals. The mean number of phonons, the average electronic kinetic and interaction energies, the ground state spectral weight and the electron-lattice correlation function are calculated and successfully compared with the best available results.

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References in corpus (1)

• Angle-resolved photoemission spectroscopy of the cuprate superconductors

Cited by in corpus (7)

• Froehlich Polaron and Bipolaron: Recent Developments
• On the validity of the Franck-Condon principle in the optical spectroscopy: optical conductivity of the Fröhlich polaron
• Ground state and optical conductivity of interacting polarons in a quantum dot
• Polaron features for long-range electron-phonon interaction
• Weak and strong coupling limits of the two-dimensional Fröhlich polaron with spin-orbit Rashba interaction
• Effects of electron-phonon coupling range on the polaron formation
• Ground state features and spectral properties of large polaron liquids from low to high charge densities