Advanced Quantum Mechanics Schwabl · Problem 4.4

Relativistic Wave Equations and their Derivation

Physics — Quantum Mechanics · real-greens-functions-hermitian-conjugate

Problem

Show, for

B = A^\dagger

, that

G^>_{AB}(\omega)

G^<_{AB}(\omega)

\chi'_{AB}(\omega)

, and

\chi''_{AB}(\omega)

are real.