Published November 1983
| Version v1
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Thermo field theory versus imaginary time formalism
Creators
- 1. International Centre for Theoretical Physics, Trieste (Italy)
- 2. Alberta Univ., Edmonton (Canada). Dept. of Physics
Description
We calculate a two-loop diagram at finite temperature to compare Thermo Field Theory (=Th.F.Th.) with the conventional imaginary time formalism (=Im.T.F.). The summation over the Matsubara frequency in Im.T.F. is carried out at two-loop level, and the result is shown to coincide with that of Th.F.Th. We confirm that in Im.T.F. the temperature dependent divergences cancel out at least in the calculation of effective potential of phi4 theory, as in Th.F.Th. (author)
Availability note (English)
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15050523.pdf
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Additional details
Publishing Information
- Imprint Pagination
- 10 p.
- Report number
- IC--83/207
INIS
- Country of Publication
- International Atomic Energy Agency (IAEA)
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 15050523
- Subject category
- S71: CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS;
- Descriptors DEI
- FEYNMAN DIAGRAM; PHI4-FIELD THEORY; QUANTUM FIELD THEORY; TEMPERATURE DEPENDENCE; TIME DEPENDENCE
- Descriptors DEC
- DIAGRAMS; FIELD THEORIES; INFORMATION