Gluon condensation in nonperturbative flow equations
Aug, 1997Citations per year
Abstract:
We employ nonperturbative flow equations for an investigation of the effective action in Yang-Mills theories. We compute the effective action for constant color magnetic fields and examine Savvidy's conjecture of an unstable perturbative vacuum. Our results indicate that the absolute minimum of occurs for B=0. Gluon condensation is described by a nonvanishing expectation value of the regularized composite operator which agrees with phenomenological estimates.- 11.15.Tk
- gauge field theory: Yang-Mills
- effective action
- background field
- perturbation theory: higher-order
- gluon: condensation
- Ward identity
- Slavnov identity
References(49)
Figures(0)