Gauge copies in the Landau–DeWitt gauge: A background invariant restriction
| Autor: | David Dudal, D. Vercauteren |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
High Energy Physics - Theory
Nuclear and High Energy Physics GRIBOV PROBLEM Infinitesimal High Energy Physics::Lattice FOS: Physical sciences CONFINEMENT 01 natural sciences High Energy Physics::Theory High Energy Physics - Lattice High Energy Physics - Phenomenology (hep-ph) HORIZON 0103 physical sciences FIELD METHOD 010306 general physics Spurious relationship Effective action Mathematical physics Quantum chromodynamics Physics 010308 nuclear & particles physics High Energy Physics - Lattice (hep-lat) Invariant (physics) QCD lcsh:QC1-999 BRST quantization High Energy Physics - Phenomenology High Energy Physics - Theory (hep-th) Physics and Astronomy lcsh:Physics Vacuum expectation value |
| Zdroj: | Physics Letters B PHYSICS LETTERS B Physics Letters B, Vol 779, Iss, Pp 275-282 (2018) |
| ISSN: | 0370-2693 |
| Popis: | The Landau background gauge, also known as the Landau-DeWitt gauge, has found renewed interest during the past decade given its usefulness in accessing the confinement-deconfinement transition via the vacuum expectation value of the Polyakov loop, describable via an appropriate background. In this Letter, we revisit this gauge from the viewpoint of it displaying gauge (Gribov) copies. We generalize the Gribov-Zwanziger effective action in a BRST and background invariant way; this action leads to a restriction on the allowed gauge fluctuations, thereby eliminating the infinitesimal background gauge copies. The explicit background invariance of our action is in contrast with earlier attempts to write down and use an effective Gribov-Zwanziger action. It allows to address certain subtleties arising in these earlier works, such as a spontaneous and thus spurious Lorentz symmetry breaking, something which is now averted. Comment: 14 pages. v2: version to appear in Phys.Lett.B, with minor modifications and extra references |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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