多费米子系统的单尺度分析。第1部分:绝缘体
Single Scale Analysis of Many Fermion Systems. Part 1: Insulators
摘要:
我们构造,使用费米泛函积分,热力学格林函数的弱耦合费米气体的费米能量位于一个差距。格林函数的估计得到的差距的大小的特征。这为零温下无能隙费米子系统的单尺度重整化群图的分析奠定了基础。
英文摘要:
We construct, using fermionic functional integrals, thermodynamic Green's functions for a weakly coupled fermion gas whose Fermi energy lies in a gap. Estimates on the Green's functions are obtained that are characteristic of the size of the gap. This prepares the way for the analysis of single scale renormalization group maps for a system of fermions at temperature zero without a gap.
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