2009/03/31 by J. L. Boldo, J. A. Helayel-Neto, J. A. Helayël-Neto +4
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Noncommutative and Quantum Gravity Theories #gr-qc #hep-th
paper · pdf · doi:10.1016/j.physletb.2010.04.059
published as Phys.Lett.B689:112-115,2010
arxiv created 2009/10/14 · openalex publication_date 2010/04/28 · arxiv updated 2010/05/25 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/02
Motivated by the interest raised by the problem of Lorenz-symmetry violating gauge theories in connection with gravity models, this contribution sets out to provide a general method to systematically study the excitation spectrum of gravity actions which include a Lorentz-symmetry breaking Chern–Simons-type action term for the spin connection. A complete set of spin-type operators is found which accounts for the (Lorentz) violation parameter to all orders and graviton propagators are worked out in a number of different situations.