Calculation of fermionic Green functions with Grassmann higher-order tensor renormalization group
Calculation of fermionic Green functions with Grassmann higher-order tensor renormalization group
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DOI：
10.1103/physrevd.97.054511
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发表时间：
2017-11
影响因子：
5
通讯作者：
Yusuke Yoshimura;Y. Kuramashi;Y. Nakamura;S. Takeda;Ryo Sakai
中科院分区：
文献类型：
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作者：
Yusuke Yoshimura;Y. Kuramashi;Y. Nakamura;S. Takeda;Ryo Sakai
我们在Grassmann高阶张量重整化群的框架下发展了费米子格林函数的计算方法。将该方法应用于三维自由威尔逊费米子系统，验证了该方法的有效性。我们将手征凝聚和两点关联函数的数值结果与解析方法得到的精确结果进行了比较。
We develop calculational method for fermionic Green functions in the framework of Grassmann higher-order tensor renormalization group. The validity of the method is tested by applying it to three-dimensional free Wilson fermion system. We compare the numerical results for chiral condensate and two-point correlation functions with the exact ones obtained by analytical methods.