Zobrazeno 1 - 10
of 197
pro vyhledávání: '"Flanagan, Eanna"'
Autor:
Flanagan, Eanna E., Nichols, David A.
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 diffeomorph
Externí odkaz:
http://arxiv.org/abs/2311.03130
We derive a prescription for the phase space of general relativity on two intersecting null surfaces. The boundary symmetry group is the semidirect product of the group of arbitrary diffeomorphisms of each null boundary which coincide at the corner,
Externí odkaz:
http://arxiv.org/abs/2309.03871
Autor:
Flanagan, Eanna E.
In 2011 Blanchet and Marsat suggested a fully relativistic version of Milgrom's modified Newtonian dynamics (MOND) in which the dynamical degrees of freedom consist of the spacetime metric and a foliation of spacetime, the khronon field. This theory
Externí odkaz:
http://arxiv.org/abs/2302.14846
We consider the motion of a point particle with spin in a stationary spacetime. We define, following Witzany (2019) and later Ramond (2022), a twelve dimensional Hamiltonian dynamical system whose orbits coincide with the solutions of the Mathisson-P
Externí odkaz:
http://arxiv.org/abs/2302.10233
Autor:
Flanagan, Eanna E., Shehzad, Ibrahim
Publikováno v:
JHEP 05 (2023) 185
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 constrain the s
Externí odkaz:
http://arxiv.org/abs/2210.11585
We consider the motion of a point particle in a stationary spacetime under the influence of a scalar, electromagnetic or gravitational self-force. We show that the conservative piece of the first-order self-force gives rise to Hamiltonian dynamics, a
Externí odkaz:
http://arxiv.org/abs/2205.01667
We develop a general framework for constructing charges associated with diffeomorphisms in gravitational theories using covariant phase space techniques. This framework encompasses both localized charges associated with spacetime subregions, as well
Externí odkaz:
http://arxiv.org/abs/2111.11974
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 can be deri
Externí odkaz:
http://arxiv.org/abs/2109.11567
Autor:
Flanagan, Eanna E
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 Poincar\'e charges of energy, linear momentum, intrinsic angul
Externí odkaz:
http://arxiv.org/abs/2102.13629
Autor:
Flanagan, Eanna E
Publikováno v:
Phys. Rev. Lett. 127, 041301 (2021)
When a black hole first forms, the properties of the emitted radiation as measured by observers near future null infinity are very close to the 1974 prediction of Hawking. However, deviations grow with time, and become of order unity after a time $t
Externí odkaz:
http://arxiv.org/abs/2102.04930