On the dynamical breaking of chiral symmetry: a new mechanism
| dc.creator | Gabrielli, Emidio | |
| dc.date | 2007-12-13 | |
| dc.date | 2008-02-21 | |
| dc.date.accessioned | 2026-07-07T11:13:44Z | |
| dc.date.available | 2026-07-07T11:13:44Z | |
| dc.description | We consider a U(1) gauge theory, minimally coupled to a massless Dirac field, where a higher-derivative term is added to the pure gauge sector, as in the Lee-Wick models. We find that this term can trigger chiral symmetry breaking at low energy in the weak coupling regime. Then, the fermion field acquires a mass that turns out to be a function of both the energy scale associated to the higher-derivative term and the gauge coupling. The dependence of the fermion mass on the gauge coupling is non-perturbative. Extensions to SU(N) gauge theories and fermion-scalar interactions are also analyzed, as well as to theories with massive gauge fields. A few implications of these results in the framework of quark-mass generation are discussed. | |
| dc.description | 15 pages 2 figures, a few comments and 4 references added. To appear in Physical Review D | |
| dc.identifier | https://arxiv.org/abs/0712.2208 | |
| dc.identifier | http://arxiv.org/abs/0712.2208 | |
| dc.identifier | Phys.Rev.D77:055020,2008 | |
| dc.identifier | doi:10.1103/PhysRevD.77.055020 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/191821 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.subject | High Energy Physics - Theory | |
| dc.title | On the dynamical breaking of chiral symmetry: a new mechanism | |
| dc.type | text |