Gauge dependence identities and their application at finite temperature
Nov, 199037 pages
Published in:
- Nucl.Phys.B 355 (1991) 1-37
- Published: 1991
Report number:
- CERN-TH-5937-90
View in:
Citations per year
Abstract: (Elsevier)
We derive a general set of identities that determine the gauge dependence of the effective action and all associated n -point vertex functions in a wide class of gauge theories. These identities are then used to resolve the recent controversy concerning the dispersion relations in high-temperature QCD and quantum gravity. In particular, we show that the leading temperature contributions to all vertex functions in QCD, and the 1- and 2-point functions in gravity are gauge covariant and gauge fixing independent. Beyond leading order we establish gauge independence of the QCD plasma dispersion relations and show how gauge-independent dispersion relations can in principle be extracted from the thermal curved-space graviton propagator.- gauge field theory: Yang-Mills
- quantum gravity
- effective action
- finite temperature
- dependence: gauge
- n-point function
- quantum chromodynamics
- dispersion relation
- background field
- transformation: Becchi-Rouet-Stora
References(70)
Figures(0)