Lorentz-preserving fields in Lorentz-violating theories
S. N. Bose National Centre for Basic Sciences - Kolkata 700098, India
2 Saha Institute of Nuclear Physics - Kolkata 700064, India
Accepted: 31 October 2011
We identify a fairly general class of field configurations (of spins and 1) which preserve Lorentz invariance in effective field theories of Lorentz violation characterized by a constant timelike vector. These fields concomitantly satisfy the equations of motion yielding cubic dispersion relations similar to those found earlier. They appear to have prospective applications in inflationary scenarios.
PACS: 11.30.Cp – Lorentz and Poincaré invariance / 11.10.Ef – Lagrangian and Hamiltonian approach / 03.30.+p – Special relativity
© EPLA, 2011