Ground state of ultracold atoms in a hexagonal ring lattice with synthetic magnetic field

Abstract Ultracold atoms with an artificial gauge field provide a powerful platform for studying physical problems in various fields. We investigate the ground state of ultracold atoms in a hexagonal ring lattice with a synthetic magnetic field. The system undergoes a quantum phase transition charac...

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Bibliographic Details
Published inPhysica scripta Vol. 96; no. 3; pp. 35402 - 35409
Main Authors Meng, Hong-Juan, Wang, Wen-Yuan, Shi, Yu-Ren
Format Journal Article
LanguageEnglish
Published IOP Publishing 01.03.2021
Subjects
Artificial gauge field
Quantum phase transition
Ultracold atoms
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Summary:Abstract Ultracold atoms with an artificial gauge field provide a powerful platform for studying physical problems in various fields. We investigate the ground state of ultracold atoms in a hexagonal ring lattice with a synthetic magnetic field. The system undergoes a quantum phase transition characterized by degenerate and nondegenerate ground states. The phase transition depends on the atomic interaction and magnetic flux. With the quantum phase transition, a very interesting quantum odd–even parity effect emerges. The parity effects depend on a repulsive or attractive atomic interaction regime.
Bibliography:PHYSSCR-112688.R1
ISSN:0031-8949
1402-4896
DOI:10.1088/1402-4896/abdaee