Abstract
The Green’s functions defined before are recast in a second quantized form. The resulting expressions can easily be generalized for the case where there are many interacting particles. The time evolution of the operators involves now the interaction terms in the Hamiltonian. As a result the generalized Green’s functions obey differential equations containing extra terms which depend on more complicated Green’s functions.
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Reference
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© 1983 Springer-Verlag Berlin Heidelberg
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Economou, E.N. (1983). Definitions. In: Green’s Functions in Quantum Physics. Springer Series in Solid-State Sciences, vol 7. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-02369-3_8
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DOI: https://doi.org/10.1007/978-3-662-02369-3_8
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-12266-1
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