On Gauge Independent Dynamical Chiral Symmetry Breaking
- Instituto de Fisica y Matematicas, Universidad Michoacana de San Nicolas de Hidalgo, Apartado Postal 2-82, Morelia, Michoacan 58040 (Mexico)
- Instituto de Ciencias Nucleares, Universidad Nacional Autonoma de Mexico, Ciurcuito Exterior, C. U., Apartado Postal 70-543, 04510, Mexico, D. F. (Mexico)
Schwinger-Dyson equations (SDEs) are an ideal framework to study nonperturbative phenomena such as dynamical chiral symmetry breaking (DCSB). Loss of gauge invariance is an obstacle to achieve fully reliable predictions from these equations. In addition to Ward-Green-Takahashi identity (WGTI), Landau-Khalatnikov-Fradkin transformations (LKFT) also play an important role in restoring the said invariance at the level of physical observables. On one hand, they impose useful constraints on the transverse part of the fermion-boson vertex and on the other, they govern the change in dynamically generated fermion propagator with a variation of gauge. We consider the latter in this article and study the gauge (in)dependence of chiral condensate in quantum electrodynamics in (2+1) space-time dimensions (QED3)
- OSTI ID:
- 20888234
- Journal Information:
- AIP Conference Proceedings, Vol. 857, Issue 1; Conference: 10. Mexican workshop on particles and fields, Morelia, Michoacan (Mexico), 6-12 Nov 2005; Other Information: DOI: 10.1063/1.2359260; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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