Vacuum stability for Dirac fermions in three dimensions
- Dipartimento di Fisica dellUniversita di Bari, 70126 Bari (Italy)
I investigate three-dimensional Abelian and non-Abelian gauge theories interacting with Dirac fermions. Using a variational method I evaluate the vacuum energy density in the one-loop approximation. It turns out that the states with a constant magnetic condensate lie below the perturbative ground state only in the case of three-dimensional quantum electrodynamics with massive fermions. {copyright} {ital 1997} {ital The American Physical Society}
- OSTI ID:
- 530278
- Journal Information:
- Physical Review, D, Journal Name: Physical Review, D Journal Issue: 12 Vol. 55; ISSN PRVDAQ; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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