Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2004-01-28
Phys. Rev. D 70, 065001 (2004)
Physics
High Energy Physics
High Energy Physics - Phenomenology
1 ps figure
Scientific paper
10.1103/PhysRevD.70.065001
A single mass-less fermionic field with an abelian U(1) gauge interaction (electrodynamics of a mass-less 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.
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