If you provide the specific chapter or equation number you are stuck on, I can walk you through the derivation using the Fetter & Walecka PDF notation.
Quantum Theory of Many-Particle Systems - Dover Publications 20 Jun 2003 —
: Applies theoretical techniques to specific systems such as: Nuclear matter and nucleon interactions. Superconductivity and superfluid helium. Electrons and phonons in metals. Educational Structure If you provide the specific chapter or equation
Quantum Theory of Many-Particle Systems by Alexander L. Fetter and John Dirk Walecka is widely considered the foundational textbook for graduate students entering the field of many-body physics. Originally published in 1971 and later reissued by Dover Publications
The text is structured to take a student from the basics of identical particles to the cutting-edge (at the time of writing) theories of superconductivity and nuclear matter. Electrons and phonons in metals
Downloading the PDF is the easy part. Mastering the content is the challenge. Here is a roadmap for the self-learner:
" by Alexander L. Fetter and John Dirk Walecka, originally published in 1971, is widely available in its . This "new" edition is an unabridged reprint that remains a standard reference for postgraduate physics students transitioning from basic quantum mechanics to many-body theory. Core Content & Structure Originally published in 1971 and later reissued by
Matsubara (imaginary-time) Green's functions and real-time linear response theory.