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Symmetry, Integrability and Geometry: Methods and Applications, 2008, Volume 4, 055, 21 pp.
DOI: https://doi.org/10.3842/SIGMA.2008.055
(Mi sigma308)
 

This article is cited in 2 scientific papers (total in 2 papers)

Space-Time Diffeomorphisms in Noncommutative Gauge Theories

Marcos Rosenbaum, J. David Vergara, L. Román Juarez

Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, A. Postal 70-543, México D.F., México
Full-text PDF (350 kB) Citations (2)
References:
Abstract: In previous work [Rosenbaum M. et al., J. Phys. A: Math. Theor. 40 (2007), 10367–10382] we have shown how for canonical parametrized field theories, where space-time is placed on the same footing as the other fields in the theory, the representation of space-time diffeomorphisms provides a very convenient scheme for analyzing the induced twisted deformation of these diffeomorphisms, as a result of the space-time noncommutativity. However, for gauge field theories (and of course also for canonical geometrodynamics) where the Poisson brackets of the constraints explicitely depend on the embedding variables, this Poisson algebra cannot be connected directly with a representation of the complete Lie algebra of space-time diffeomorphisms, because not all the field variables turn out to have a dynamical character [Isham C. J., Kuchař K. V., Ann. Physics 164 (1985), 288–315, 316–333].
Nonetheless, such an homomorphic mapping can be recuperated by first modifying the original action and then adding additional constraints in the formalism in order to retrieve the original theory, as shown by Kuchař and Stone for the case of the parametrized Maxwell field in [Kuchař K. V., Stone S. L., Classical Quantum Gravity 4 (1987), 319–328].
Making use of a combination of all of these ideas, we are therefore able to apply our canonical reparametrization approach in order to derive the deformed Lie algebra of the noncommutative space-time diffeomorphisms as well as to consider how gauge transformations act on the twisted algebras of gauge and particle fields. Thus, hopefully, adding clarification on some outstanding issues in the literature concerning the symmetries for gauge theories in noncommutative space-times.
Keywords: noncommutativity; diffeomorphisms; gauge theories.
Received: April 11, 2008; in final form June 25, 2008; Published online July 16, 2008
Bibliographic databases:
Document Type: Article
MSC: 70S10; 70S05; 81T75
Language: English
Citation: Marcos Rosenbaum, J. David Vergara, L. Román Juarez, “Space-Time Diffeomorphisms in Noncommutative Gauge Theories”, SIGMA, 4 (2008), 055, 21 pp.
Citation in format AMSBIB
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