Dynamics of a lattice gauge theory with fermionic matter—minimal quantum simulator with time-dependent impurities in ultracold gases. (7th August 2018)

• Record Type: Journal Article
• Authors: Smith, Adam; Kovrizhin, Dmitry L; Moessner, Roderich; Knolle, Johannes
• Is Part Of: Quantum science and technology. Volume 3:Number 4(2018)
• Publication Date: 2018-08-07
• Subjects: lattice gauge theory -- ultracold gases -- quantum quench; Quantum theory -- Periodicals; Quantum theory; Periodicals; 530
• DOI: 10.1088/2058-9565/aad39a
• Languages: English
• ISSNs: 2058-9565

Abstract

Abstract: We propose a minimal model to study the real-time dynamics of a Z 2 lattice gauge theory (LGT) coupled to fermionic matter in a cold atom quantum simulator setup. We show that dynamical correlators of the gauge fields can be measured in experiments studying the time-evolution of two pairs of impurities, and suggest the protocol for implementing the model in cold atom experiments. Further, we discuss a number of unexpected features found in the integrable limit of the model, as well as its extensions to a non-integrable case. A potential experimental implementation of our model in the latter regime would allow one to simulate strongly-interacting LGT beyond current capabilities of classical computers.