TY  - JOUR
AB  - Thermal n-point Green functions in the framework of quantum field theory at finite temperature are considered. We reanalyze how analytic continuations from imaginary to real energies relate these functions originally defined in the imaginary-time formalism to retarded and advanced realtime ones. We described a new and rather simple method which is valid to all orders of perturbation theory and which has the further advantage that it is independent of approximations often applied in actual finite-order calculations.
DA  - 1994
DO  - 10.1103/PhysRevD.49.4107
LA  - eng
IS  - 8
M2  - 4107
PY  - 1994
SN  - 0556-2821
SP  - 4107-4112
T2  - Physical review D: Particles, fields, gravitation, and cosmology
TI  - Analytic continuation of thermal N-point functions from imaginary to real energies
UR  - https://nbn-resolving.org/urn:nbn:de:0070-pub-17806849
Y2  - 2024-11-22T06:30:03
ER  -