We present a highly efficient yet accurate analytical approximation for the Green's function of
a Holstein polaron. It is obtained by summing all the self-energy diagrams, but with each self …

A comprehensive picture of polaron and bipolaron physics is essential to understand the
optical absorption spectrum in many materials with electron-phonon interactions. In …

We study static and dynamic properties of an electron coupled to dispersive quantum optical
phonons in the framework of the Holstein model defined on a one-dimensional lattice …

We explore the ground state and thermodynamic properties of the polaron coupled to
quantum dispersive optical phonons in one spatial dimension. Calculations are performed …

Keeping the full quantum nature of the problem, we compute the relaxation time of the
Holstein polaron in one dimension after it was driven far from the equilibrium by a strong …

This work represents a fundamental study of a Holstein polaron in one dimension driven
away from the ground state by a constant electric field. Taking fully into account quantum …

We investigate and compare different approaches for handling the dynamical effects of
electron-phonon coupling (EPC) on the superconducting properties of two-dimensional (2D) …

We compute the Holstein polaron spectral function on a one-dimensional ring using the
finite-temperature T Lanczos method. With increasing T additional features in the spectral …

We show how to systematically improve the momentum average (MA) approximation for the
Green's function of a Holstein polaron by systematically improving the accuracy of the self …

We investigate the thermodynamics and finite-temperature spectral functions of the Holstein
polaron using a density-matrix renormalization group method. Our method combines …