Comment on `Dynamical properties of small polarons'

Abstract

We show that the conclusion on the breakdown of the standard small polaron theory made recently by E.V. deMello and J. Ranninger (Phys. Rev. B 55, 14872 (1997)) is a result of an incorrect interpretation of the electronic and vibronic energy levels of the two-site Holstein model. The small polaron theory, when properly applied, agrees well with the numerical results of these authors. Also we show that their attempt to connect the properties of the calculated correlation functions with the features of the intersite electron hopping is unsuccessful.

To appear in Phys. Rev. B

References in corpus (3)

• Density matrix renormalization group study of the polaron problem in the Holstein model
• Spectral properties of the 2D Holstein polaron
• Polaron effective mass from Monte Carlo simulations

Cited by in corpus (12)

• Froehlich Polaron and Bipolaron: Recent Developments
• Ferromagnetism and electron-phonon coupling in the manganites
• Polarons and slow quantum phonons
• Translation-invariant bipolarons and the problem of high-temperature superconductivity
• Mass Renormalization in the Su-Schrieffer-Heeger Model
• Superconducting properties of a nonideal bipolaron gas
• Stripes in charge-transfer Mott insulators: effects of lattice vibrations and the Coulomb interaction
• Superconducting properties of 3D low-density TI-bipolaron gas
• Translational-invariant bipolarons and superconductivity
• Polaron self-trapping in a honeycomb net
• Mass enhancement in narrow band systems
• Particle Path Correlations in a Phonon Bath