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arXiv · 2502.08937

Band-edge superfluid of Bose-Einstein condensates in the spin-orbit-coupled Zeeman lattice

Huaxin He·Fengtao Pang·Hao Lyu·Yongping Zhang
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Abstract

Since the first experimental realization of Bose-Einstein condensates in a spin-orbit-coupled Zeeman lattice, a wide range of applications have been found in these systems. Here, we systematically study the ground-state phase diagram of the systems. We address that the band-edge phase in the ground-state phase diagram is exotic and exists in a very broad parameter regime. The superfluidity of the band-edge states is identified by elementary excitations and superfluid fraction.

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Huaxin He, Fengtao Pang, Hao Lyu, Yongping Zhang. 2025-02-13. Band-edge superfluid of Bose-Einstein condensates in the spin-orbit-coupled Zeeman lattice. https://doi.org/10.1103/physreva.111.063305

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