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We introduce the one- and two-body Green’s functions and demonstrate their relationship with various observables. We connect the two-body Green’s function to the linear response of the system to an external probe. Additionally, we present an equation of motion that links the different many-body Green’s functions to one another.

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Green’s Function

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  • 发表日期：

    2026年

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  • Giampaolo Co’

摘要

We introduce the one- and two-body Green’s functions and demonstrate their relationship with various observables. We connect the two-body Green’s function to the linear response of the system to an external probe. Additionally, we present an equation of motion that links the different many-body Green’s functions to one another.