6533b85cfe1ef96bd12bca9b
RESEARCH PRODUCT
On dynamical gluon mass generation
Joannis PapavassiliouArlene Cristina Aguilarsubject
PhysicsNuclear and High Energy PhysicsParticle physicsBackground field methodHigh Energy Physics::LatticeMass generationHigh Energy Physics::PhenomenologyFísicaFOS: Physical sciencesPropagatorIntegral equationGluonVertex (geometry)Massless particleHigh Energy Physics::TheoryHigh Energy Physics - PhenomenologyHigh Energy Physics - Phenomenology (hep-ph)PinchMathematical physicsdescription
The effective gluon propagator constructed with the pinch technique is governed by a Schwinger-Dyson equation with special structure and gauge properties, that can be deduced from the correspondence with the background field method. Most importantly the non-perturbative gluon self-energy is transverse order-by-order in the dressed loop expansion, and separately for gluonic and ghost contributions, a property which allows for a meanigfull truncation. A linearized version of the truncated Schwinger-Dyson equation is derived, using a vertex that satisfies the required Ward identity and contains massless poles. The resulting integral equation, subject to a properly regularized constraint, is solved numerically, and the main features of the solutions are briefly discussed.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2007-01-01 |