Comment on 'Noncommutative gauge theories and Lorentz symmetry'
- Institute of Particle and Nuclear Physics, Charles University of Prague, V Holesovickach 2, 182 00 Prague 8 (Czech Republic) and Department of Physics 'E. R.Caianiello', University of Salerno and INFN, Via Allende 84081, Baronissi (Italy)
We show that Lorentz symmetry is generally absent for noncommutative (Abelian) gauge theories and obtain a compact formula for the divergence of the Noether currents that allows a thorough study of this instance of symmetry violation. We use that formula to explain why the results of ''Noncommutative gauge theories and Lorentz symmetry'', Phys. Rev. D 70, 125004 (2004) by R. Banerjee, B. Chakraborty, and K. Kumar, interpreted there as new criteria for Lorentz invariance, are in fact just a particular case of the general expression for Lorentz violation obtained here. Finally, it is suggested that the divergence formula should hold in a vast class of cases, such as, for instance, the standard model extension.
- OSTI ID:
- 21039221
- Journal Information:
- Physical Review. D, Particles Fields, Vol. 77, Issue 4; Other Information: DOI: 10.1103/PhysRevD.77.048701; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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