BLF-SSH Polarons coupled to Acoustic Phonons in the Adiabatic limit

TL;DR

This paper investigates polaron formation in the BLF-SSH model with acoustic phonons in the adiabatic limit, using numerical and analytical methods to determine ground states, electronic configurations, and critical coupling strengths across dimensions.

Contribution

It provides a comprehensive analysis of polaron formation in the BLF-SSH model, identifying critical coupling strengths and detailed electronic and ionic configurations in multiple dimensions.

Findings

Identification of non-zero critical coupling strength for polaron formation in 2D and 3D

Robust ground state energies across a wide range of coupling strengths

Detailed characterization of electronic configurations and ionic distortions

Abstract

We survey polaron formation in the BLF-SSH model using acoustic phonons in the adiabatic limit. Multiple different numerical optimization routines and strong coupling analytical calculations are used to find a robust ground state energy for a wide range of coupling strengths. The electronic configuration and accompanying ionic distortions of the polaron were determined, as well as a non-zero critical coupling strength for polaron formation in two and three dimensions.