Covariance properties and regularization of conserved currents in tetrad gravity
Nenhuma Miniatura disponível
Data
2006-06-20
Autores
Obukhov, Yuri N. [UNESP]
Rubilar, Guillermo F. [UNESP]
Título da Revista
ISSN da Revista
Título de Volume
Editor
Resumo
We discuss the properties of the gravitational energy-momentum 3-form within the tetrad formulation of general relativity theory. We derive the covariance properties of the quantities describing the energy-momentum content under Lorentz transformations of the tetrad. As an application, we consider the computation of the total energy (mass) of some exact solutions of Einstein's general relativity theory which describe compact sources with asymptotically flat spacetime geometry. As it is known, depending on the choice of tetrad frame, the formal total integral for such configurations may diverge. We propose a natural regularization method which yields finite values for the total energy-momentum of the system and demonstrate how it works on a number of explicit examples. © 2006 The American Physical Society.
Descrição
Palavras-chave
Como citar
Physical Review D - Particles, Fields, Gravitation and Cosmology, v. 73, n. 12, 2006.