Zero Momentum Calculations for Finite Temperature Field Theory - INSPIRE

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Zero Momentum Calculations for Finite Temperature Field Theory

T.S. Evans
(
- Imperial Coll., London
)

Aug, 1986

44 pages

Published in:

Z.Phys.C 36 (1987) 153

DOI:

10.1007/BF01556175

Report number:

IMPERIAL/TP/85-86/34

View in:

KEK scanned document

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Abstract: (Springer)

Problems with calculations of Feynaman diagrams with no external leg carrying non-zero momentum for a finite temperature scalar field theory using a real time path integral approach are considered. The necessary extra rules for all such calculations are derived, covering all the usual methods of calculating the effective potential, and several problems with such calculations from the path integral viewpoint are resolved.

FIELD THEORY: FINITE TEMPERATURE
FIELD THEORY: SCALAR
FIELD THEORY: PATH INTEGRAL
FEYNMAN GRAPH
PROPAGATOR
MOMENTUM
FIELD THEORY: EFFECTIVE ACTION
APPROXIMATION: EFFECTIVE POTENTIAL

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