<i>Ab initio</i> self-consistent many-body theory of polarons at all couplings
Jon Lafuente-Bartolome, Chao Lian, Weng Hong Sio, Idoia G. Gurtubay, Asier Eiguren, Feliciano Giustino
Abstract
A self-consistent many-body theory of polarons is presented. This unifies weak- and strong-coupling approaches to the electron-phonon interaction from first principles, opening the door toward a full characterization of polaronic effects in materials at all coupling strengths.
Topics & Concepts
PolaronPhysicsHamiltonian (control theory)Feynman diagramAb initioQuantum mechanicsPhononSelf-energyPerturbation theory (quantum mechanics)ElectronQuantum electrodynamicsMathematicsMathematical optimizationElectronic and Structural Properties of OxidesPhysics of Superconductivity and MagnetismMagnetic and transport properties of perovskites and related materials