在有限的兴奋剂中模拟二维t-J模型,用神经量子状态模拟有限的兴奋剂
Hannah Lange1,2,3, Annika Böhler1,2, Christopher Roth4
1Ludwig-Maximilians-Universität München, Department of Physics and Arnold Sommerfeld Center for Theoretical Physics (ASC), Theresienstraße 37, München D-80333, Germany.
我们开发了Gutzwiller预测的隐藏费米子决定性状态 (G-HFDS),用于模拟强烈相互作用的费米子系统. 这种高效的方法为所有兴奋剂水平的费米 - 哈巴德模型提供了新的见解.
科学领域:
- 凝聚物质物理学 凝聚物质物理学
- 量子多体系统是一个量子多体系统.
- 计算物理 计算物理
背景情况:
- 模拟大型,强烈相互作用的费米离子系统在计算上要求很高.
- 现有的数值方法难以应对这些系统的复杂性.
研究的目的:
- 介绍一种新的,高效的方法来模拟强烈相互作用的费米离子系统.
- 在整个兴奋剂制度中调查t-J模型的低能物理.
主要方法:
- 开发了Gutzwiller预测的隐藏费米子决定性状态 (G-HFDS).
- 将G-HFDS应用于费米-哈巴德模型 (t-J模型) 的强相互作用极限.
- 分析了自旋和极子相关函数和费米表面.
主要成果:
- 在大型格子 (10x10) 上,G-HFDS 通过矩阵产品状态实现了具有竞争力的能量.
- 由于G-HFDS使用的参数少得多,因此可以对更大的系统进行模拟.
- 通过兴奋剂追踪磁极子和新出现的准粒子的演变.
结论:
- G-HFDS提供了一种高效的方法来模拟大规模的费米离子系统.
- 该方法为运动和磁相互作用的相互作用提供了新的见解.
- 具有费米子符号结构的基于决定者的神经量子状态显示出巨大的潜力.
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