Full counting statistics in the gapped XXZ spin chain

Full counting statistics in the gapped XXZ spin chain
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间隙 XXZ 自旋链中的完整计数统计

DOI:
10.1209/0295-5075/129/60007
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发表时间:
2020
期刊:
Europhysics Letters
影响因子:
--
通讯作者:
Sara Murciano
Sara Murciano
中科院分区:
--
文献类型:
--
作者:
P. Calabrese;M. Collura;G. Di Giulio;Sara Murciano

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我们利用带隙XXZ自旋链基态纠缠谱的知识,推导出长度为π的大自旋块中横向磁化强度的全计数统计的渐近精确结果。我们发现,对于偶数长度的子系统的完整的计数统计是高斯分布,而对于奇数的子系统,它是两个高斯分布的总和。我们用精确的张量网络模拟来测试我们的分析预测。作为一个副产品,我们还获得了对称性(磁化)解决纠缠熵。
We exploit the knowledge of the entanglement spectrum in the ground state of the gapped XXZ spin chain to derive asymptotic exact results for the full counting statistics of the transverse magnetisation in a large spin block of length ℓ. We found that for a subsystem of even length the full counting statistics is Gaussian, while for odd subsystems it is the sum of two Gaussian distributions. We test our analytic predictions with accurate tensor networks simulations. As a byproduct, we also obtain the symmetry (magnetisation) resolved entanglement entropies.
DOI: 10.1088/1367-2630/18/10/103015
发表时间: 2016
影响因子: 3.3
作者:
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通讯作者: Moreno-Cardoner M
DOI: 10.1126/science.aau0818
发表时间: 2019-04-19
期刊: SCIENCE
影响因子: 56.9
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