Variational principle for gravity with null and non-null boundaries: a unified boundary counter-term

Krishnamohan Parattu, Sumanta Chakraborty, T. Padmanabhan

Resultado de la investigación: Contribución a una revistaArtículorevisión exhaustiva

44 Citas (Scopus)

Resumen

It is common knowledge that the Einstein–Hilbert action does not furnish a well-posed variational principle. The usual solution to this problem is to add an extra boundary term to the action, called a counter-term, so that the variational principle becomes well-posed. When the boundary is spacelike or timelike, the Gibbons–Hawking–York counter-term is the most widely used. For null boundaries, we had proposed a counter-term in a previous paper. In this paper, we extend the previous analysis and propose a counter-term that can be used to eliminate variations of the “off-the-surface” derivatives of the metric on any boundary, regardless of its spacelike, timelike or null nature.

Idioma originalInglés
Número de artículo129
PublicaciónEuropean Physical Journal C
Volumen76
N.º3
DOI
EstadoPublicada - 1 mar. 2016
Publicado de forma externa

Huella

Profundice en los temas de investigación de 'Variational principle for gravity with null and non-null boundaries: a unified boundary counter-term'. En conjunto forman una huella única.

Citar esto