Extended Jahn-Teller effects in fermion-boson systems revisited

TL;DR

This paper broadens the Jahn-Teller effect framework to include fermion-boson interactions, introducing the concept of extended vibronic polarons that exhibit unique propagation and symmetry-breaking features.

Contribution

It proposes a generalized fermion-boson coupling model using extended vibronic polarons, linking it to supersymmetry and exploring new physical phenomena.

Findings

Identification of helical VP propagation patterns

Orbital angular momentum in free carriers

Connections to supersymmetry and symmetry breaking

Abstract

Following earlier suggestions, we now redefine our proposal for extending the Jahn-Teller coupling beyond the framework of the electron-phonon interactions so as to cover fermion-boson interactions on a broader energy scale. Our basic unit is an extended "vibronic polaron" (VP), a fermion, itinerant or localized, along with the associated distortion of its boson cloud. A fingerprint of the itinerant unit is the helical form of VP propagation, else the occurrence of an orbital angular momentum for the free carrier. Examples for extended VP's are provided by LG-mode laser beams and, possibly, neutrino-meson coupled units. Our VP theory relates to supersymmetry where it accounts for symmetry breaking, both external and internal ones.