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arXiv 2303.14967cond-mat.quant-gas
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极性分子耗散多体系统中的亚稳态铁磁团簇

Metastable ferromagnetic clusters in dissipative many-body systems of polar molecules

Naoki Hara, Masaya Nakagawa

AI总结:

本文研究光晶格中极性分子在双体损失耗散与长程相互作用下形成亚稳态铁磁团簇的机制,揭示其自旋态和尺寸由相互作用对称性及初始构型决定,并构建有效模型解释其作为准暗态的出现,为自旋-S海森堡模型的量子模拟提供新途径。

摘要:

我们研究了化学反应引起的双体损失对光晶格中费米子极性分子量子磁性的影响。我们表明,耗散与强长程相互作用之间的相互作用导致亚稳态铁磁团簇的形成。团簇的自旋态由相互作用参数控制,并反映相互作用的对称性。由于耗散多体动力学过程中的希尔伯特空间碎裂,团簇的大小强烈依赖于分子的初始构型。我们构建了一个有效模型,以展示亚稳态作为准暗态的出现。讨论了在自旋-S海森堡模型量子模拟中的应用。

英文摘要:

We investigate the effect of two-body loss due to chemical reactions on quantum magnetism of fermionic polar molecules in an optical lattice. We show that an interplay between dissipation and strong long-range interactions leads to formation of metastable ferromagnetic clusters. The spin states of clusters are controlled by interaction parameters and reflect the symmetry of interactions. The size of clusters strongly depends on the initial configuration of molecules due to Hilbert-space fragmentation during dissipative many-body dynamics. We construct an effective model to show the emergence of metastable states as quasi-dark states. Application to quantum simulation of the spin-$S$ Heisenberg model is discussed.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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