Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2004-12-29
Phys.Rev.D71:065008,2005
Physics
High Energy Physics
High Energy Physics - Theory
16 pages REVTeX
Scientific paper
10.1103/PhysRevD.71.065008
The fate of the Nambu-Goldstone modes arising from spontaneous Lorentz violation is investigated. Using the vierbein formalism, it is shown that up to 10 Lorentz and diffeomorphism Nambu-Goldstone modes can appear and that they are contained within the 10 modes of the vierbein associated with gauge degrees of freedom in a Lorentz-invariant theory. A general treatment of spontaneous local Lorentz and diffeomorphism violation is given for various spacetimes, and the fate of the Nambu-Goldstone modes is shown to depend on both the spacetime geometry and the dynamics of the tensor field triggering the spontaneous Lorentz violation. The results are illustrated within the general class of bumblebee models involving vacuum values for a vector field. In Minkowski and Riemann spacetimes, the bumblebee model provides a dynamical theory generating a photon as a Nambu-Goldstone boson for spontaneous Lorentz violation. The Maxwell and Einstein-Maxwell actions are automatically recovered in axial gauge. Associated effects of potential experimental relevance include Lorentz-violating couplings in the matter and gravitational sectors of the Standard-Model Extension and unconventional Lorentz-invariant couplings. In Riemann-Cartan spacetime, the possibility also exists of a Higgs mechanism for the spin connection, leading to the absorption of the propagating Nambu-Goldstone modes into the torsion component of the gravitational field.
Bluhm Robert
Kostelecky Alan
No associations
LandOfFree
Spontaneous Lorentz Violation, Nambu-Goldstone Modes, and Gravity does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Spontaneous Lorentz Violation, Nambu-Goldstone Modes, and Gravity, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spontaneous Lorentz Violation, Nambu-Goldstone Modes, and Gravity will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-319770