Analytical results for the superflow of spin-orbit-coupled Bose-Einstein condensates in optical lattices

Autor: Zhao-Yun Zeng, Jinpeng Xiao, Baiyuan Yang, Lei Li, Xiaobing Luo, Zhou Hu, Yunrong Luo, Aixi Chen
Rok vydání: 2021
Předmět:
Zdroj: Physical Review A. 103
ISSN: 2469-9934
2469-9926
DOI: 10.1103/physreva.103.063324
Popis: In this paper, we show that for sufficiently strong atomic interactions, there exist analytical solutions of current-carrying nonlinear Bloch states at the Brillouin zone edge to the model of spin-orbit-coupled Bose-Einstein condensates (BECs) with symmetric spin interaction loaded into optical lattices. These simple but generic exact solutions provide an analytical demonstration of some intriguing properties which have neither an analog in the regular BEC lattice systems nor in the uniform spin-orbit-coupled BEC systems. It is an analytical example for understanding the superfluid and other related properties of the spin-orbit-coupled BEC lattice systems.
9 pages, 6 figures, a couple of typos in equation are corrected
Databáze: OpenAIRE
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