2010/04/30 by Jorge Bellorin, JORGE BELLORÍN, Alvaro Restuccia +1 · 42 citations
Physics and Astronomy · #Consistency (knowledge bases) #Cosmology and Gravitation Theories #Coupling constant #Covariance #General covariance #General relativity #Gravitation #Hamiltonian (control theory) #Hamiltonian constraint #Pulsars and Gravitational Waves Research #Relativity and Gravitational Theory #Spacetime #Term (time) #gr-qc #hep-th
paper · pdf · doi:10.1142/s0218271812500290
published in International Journal of Modern Physics D 21(03), 1250029 (World Scientific) · The wording has been revised in general, specially in abstract, introduction and conclusions. No changes in results. Version published in IJMPD
openalex publication_date 2012/02/06 · arxiv created 2012/02/27 · arxiv updated 2012/04/19 · openalex created_date 2017/10/20 · openalex updated_date 2026/08/05
With the goal of giving evidence for the theoretical consistency of the Hořava theory, we perform a Hamiltonian analysis on a classical model suitable for analyzing its effective dynamics at large distances. The model is the lowest-order truncation of the Hořava Theory with the detailed-balance condition. We consider the pure gravitational theory without matter sources. The model has the same potential term of general relativity, but the kinetic term is modified by the inclusion of an arbitrary coupling constant λ. Since this constant breaks the general covariance under spacetime diffeomorphisms, it is believed that arbitrary values of λ deviate the model from general relativity. We show that this model is not a deviation at all, instead it is completely equivalent to general relativity in a particular partial gauge fixing for it. In doing this, we clarify the role of a second-class constraint of the model.