Zobrazeno 1 - 10
of 395
pro vyhledávání: '"É. Flanagan"'
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 7, Pp 1-71 (2024)
Abstract We derive a prescription for the phase space of general relativity on two intersecting null surfaces using the null initial value formulation. The phase space allows generic smooth initial data, and the corresponding boundary symmetry group
Externí odkaz:
https://doaj.org/article/431435a54e3e43f1b111bc957513b103
Autor:
Éanna É. Flanagan, David A. Nichols
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 3, Pp 1-17 (2024)
Abstract The asymptotic symmetry group of general relativity in asymptotically flat spacetimes can be extended from the Bondi-Metzner-Sachs (BMS) group to the generalized BMS (GMBS) group suggested by Campiglia and Laddha, which includes arbitrary di
Externí odkaz:
https://doaj.org/article/46f85ab3168c4601a32b988a05551b29
Autor:
Éanna É. Flanagan, Ibrahim Shehzad
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 5, Pp 1-67 (2023)
Abstract Gauge and gravitational theories in asymptotically flat settings possess infinitely many conserved charges associated with large gauge transformations or diffeomorphisms that are nontrivial at infinity. To what extent do these charges constr
Externí odkaz:
https://doaj.org/article/afca39fb753745a9b9cf6dc63f58e815
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 1, Pp 1-29 (2022)
Abstract The Brown-York stress tensor provides a means for defining quasilocal gravitational charges in subregions bounded by a timelike hypersurface. We consider the generalization of this stress tensor to null hypersurfaces. Such a stress tensor ca
Externí odkaz:
https://doaj.org/article/3c638385b3d447cf8047c59dc88aebc7
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 7, Pp 1-1 (2023)
A correction to this paper has been published: https://doi.org/10.1007/JHEP11(2018)125
Externí odkaz:
https://doaj.org/article/3a6a159ea9274656bcbb440a37cc0861
Autor:
Éanna É. Flanagan
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 7, Pp 1-36 (2021)
Abstract As a black hole evaporates, each outgoing Hawking quantum carries away some of the black holes asymptotic charges associated with the extended Bondi-Metzner-Sachs group. These include the Poincaré charges of energy, linear momentum, intrins
Externí odkaz:
https://doaj.org/article/9e09c354bde74eaca868aa136ddf2546
Publikováno v:
Journal of High Energy Physics, Vol 2020, Iss 1, Pp 1-27 (2020)
Abstract We consider a recently proposed extension of the Bondi-Metzner-Sachs algebra to include arbitrary infinitesimal diffeomorphisms on a 2-sphere. To realize this extended algebra as asymptotic symmetries, we work with an extended class of space
Externí odkaz:
https://doaj.org/article/6f92c29864d0439e8257cf819a4ba700
Autor:
Éanna. É. Flanagan
Publikováno v:
The Astrophysical Journal, Vol 958, Iss 2, p 107 (2023)
In 2011 Blanchet and Marsat suggested a fully relativistic version of Milgrom's modified Newtonian dynamics in which the dynamical degrees of freedom consist of the spacetime metric and a foliation of spacetime, the khronon field. This theory is simp
Externí odkaz:
https://doaj.org/article/daa25236b75e484caeadfe2b67d4cf7b
Publikováno v:
Journal of High Energy Physics, Vol 2018, Iss 11, Pp 1-68 (2018)
Abstract We study general relativity at a null boundary using the covariant phase space formalism. We define a covariant phase space and compute the algebra of symmetries at the null boundary by considering the boundary-preserving diffeomorphisms tha
Externí odkaz:
https://doaj.org/article/a681a199e11040abadb1583d46f8839e
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