Itinerancy-localization duality of quasiparticles revealed by strong correlation

TL;DR

This paper explores the dual nature of quasiparticles in strongly correlated systems, revealing how their itinerant and localized behaviors coexist and influence phenomena like high-temperature superconductivity.

Contribution

It introduces a mechanism linking quasiparticle duality to high-temperature superconductivity based on the interplay of their dual behaviors.

Findings

Quasiparticles exhibit coexistence of itinerancy and localization.

The duality influences the complexity of strongly correlated systems.

A proposed mechanism connects duality to superconductivity.

Abstract

The strong interaction between electrons reveals the duality of the itinerancy and the localization of quasiparticles. The physical phenomena corresponding to each component of the duality could be realized and coexist within the category of the uncertainty principle of the carrier dynamics, which can be a strong reason of the complexity appearing in the strongly correlated system. A possible mechanism for the high-temperature superconductivity is proposed on the basis of the interplay between the renormalized expectation quantities of both parts.