Spectral properties of four-time fermionic Green's functions

Abstract

The spectral relations for the four-time fermionic Green's functions are derived in the most general case. The terms which correspond to the zero-frequency anomalies, known before only for the bosonic Green's functions, are separated and their connection with the second cumulants of the Boltzmann distribution function is elucidated. The high-frequency expansions of the four-time fermionic Green's functions are provided for different directions in the frequency space.

14 pages

References in corpus (4)

• Inelastic Light Scattering From Correlated Electrons
• The Hubbard model within the equations of motion approach
• Electronic Raman scattering in correlated materials: exact treatment of nonresonant, mixed, and resonant scattering with dynamical mean field theory
• Resonant inelastic X-ray scattering in a Mott insulator

Cited by in corpus (5)

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• Overcomplete compact representation of two-particle Green's functions
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• Analytic continuation of multipoint correlation functions
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