Work

Analog quantum simulation of chiral magnetic dynamics using optical superlattices

Year: 2026

Type: article

Abstract: We propose an analog quantum simulation of chiral magnetic dynamics using ultracold atoms in an optical superlattice. The massive Schwinger model in the zero gauge coupling limit maps onto the Rice-Mele model, with the fermion mass and topological angle encoded in the superlattice parameters. We study the real-time dynamics of the vector current following two quench protocols that drive continuous chirality injection and chirality relaxation. Simulations with realistic superlattice parameters and experimental noise demonstrate clear mass dependence of the current dynamics in both protocols, robust against experimental imperfections. The vector current may be directly measurable via single-bond-resolved detection, establishing cold atom superlattices as a viable platform for probing nonequilibrium chiral phenomena.

Source: Physical Review A

DOI: 10.1103/hr8d-ttj8

Authors: Sabhyata Gupta, Luis Santos

Institution: Leibniz University Hannover

Language: English

Topic: Cold Atom Physics and Bose-Einstein Condensates

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $2,675

Funder: Deutsche Forschungsgemeinschaft