Condensation of gauge interacting massless fermions

Journal Article · Wed Sep 15 00:00:00 EDT 2004 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PhysRevD.70.065001· OSTI ID:20705263

Siringo, Fabio ^[1]

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1. Dipartimento di Fisica e Astronomia, Universita di Catania, INFN Sez. di Catania and INFM UdR di Catania, Via S. Sofia 64, Catania (Italy)

A single massless fermionic field with an Abelian U(1) gauge interaction (electrodynamics of a massless Dirac fermion) is studied by a variational method. Even without the insertion of any extra interaction the vacuum is shown to be unstable towards a particle-antiparticle condensate. The single particle excitations do acquire a mass and behave as massive Fermi particles. An explicit low-energy gap equation has been derived and numerically solved. Some consequences of condensation and mass generation are discussed in the framework of the standard model.

• OSTI ID: 20705263
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 6 Vol. 70; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANTIPARTICLES
ENERGY GAP
EXCITATION
FERMIONS
PARTICLE INTERACTIONS
QUANTUM ELECTRODYNAMICS
STANDARD MODEL
U-1 GROUPS
UNITARY SYMMETRY
VARIATIONAL METHODS
WEINBERG-SALAM GAUGE MODEL