关于Hubbard环的一体格林函数的对角Padé逼近
Diagonal Padé Approximant of the one-body Green's function, a study on Hubbard rings
摘要：
多体格林函数的Padé近似可以通过重新排列其微扰展开式的项来建立。假设，最好的使用有限数量的条款，这样的扩张是由子类的对角Padé逼近在这里测试，并在很大程度上证实，在一个可解的模型系统，即哈伯德环的各种网站数量，填充和相互作用的强度。
英文摘要：
Padé approximants to the many-body Green's function can be built by rearranging terms of its perturbative expansion. The hypothesis that the best use of a finite number of terms of such an expansion is given by the subclass of diagonal Padé approximants is here tested, and largely confirmed, on a solvable model system, namely the Hubbard ring for a variety of site numbers, fillings and interaction strengths.
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。
