Mesoscopic phenomena in Bose-Einstein systems: Persistent currents, population oscillations and quantal phases

TL;DR

This paper theoretically investigates mesoscopic phenomena such as persistent currents and population oscillations in Bose-Einstein systems, drawing analogies with electronic and superconducting systems, to deepen understanding of quantum effects in atomic gases.

Contribution

It introduces a theoretical framework for mesoscopic phenomena in Bose-Einstein systems, highlighting their similarities to electronic and superconducting effects.

Findings

Identification of persistent currents in Bose-Einstein systems

Demonstration of population oscillations driven by quantal phases

Analogies established between atomic and electronic mesoscopic phenomena

Abstract

Mesoscopic phenomena - including population oscillations and persistent currents driven by quantal phases - are explored theoretically in the context of multiply-connected Bose-Einstein systems composed of trapped alkali-metal gas atoms. These atomic phenomena are bosonic analogues of electronic persistent currents in normal metals and Little-Parks oscillations in superconductors.