General relativity

  title={General relativity},
  author={Derek J. Raine},
  • D. Raine
  • Published 31 December 2021
  • Physics
  • Nature
The Wald–Zoupas prescription for asymptotic charges at null infinity in general relativity
We use the formalism developed by Wald and Zoupas to derive explicit covariant expressions for the charges and fluxes associated with the Bondi–Metzner–Sachs symmetries at null infinity in
Curved non-relativistic spacetimes, Newtonian gravitation and massive matter
There is significant recent work on coupling matter to Newton-Cartan spacetimes with the aim of investigating certain condensed matter phenomena. To this end, one needs to have a completely general
The origin of Weyl gauging in metric-affine theories
In the first part, we discuss the interplay between local scale invariance and metric-affine degrees of freedom from few distinct points of view. We argue, rather generally, that the gauging of Weyl
Novel supersymmetric extension of BMS symmetries at null infinity
We show that we can combine the (complex, self-dual) BMS vector fields with the recently defined BMS twistors to obtain a new supersymmetric extension of the BMS symmetries at null infinity. We compare
Conservation of asymptotic charges from past to future null infinity: Lorentz charges in general relativity
Abstract We show that the asymptotic charges associated with Lorentz symmetries on past and future null infinity match in the limit to spatial infinity in a class of asymptotically-flat spacetimes.
The clustering of gamma-ray bursts in the Hercules–Corona Borealis Great Wall: the largest structure in the Universe?
The Hercules-Corona Borealis Great Wall is a statistically significant clustering of gamma-ray bursts around redshift 2. Motivated by recent theoretical results indicating that a maximal Universal
Asymptotic symmetries and charges at spatial infinity in general relativity
We analyze the asymptotic symmetries and their associated charges at spatial infinity in four-dimensional asymptotically-flat spacetimes. We use the covariant formalism of Ashtekar and Hansen where
Does time always slow down as gravity increases?
We consider gravitational time dilation between stationary observers and present examples which contradict the statement that ‘time slows down as gravity increases’. We furthermore show that this
Cosmic acceleration via space-time-matter theory
We consider the space-time-matter theory (STM) in a five-dimensional vacuum space-time with a generalized FLRW metric to investigate the late-time acceleration of the universe. For this purpose, we
Buracos negros cosmológicos
Black hole-like spacetimes in a cosmological background are studied within the Einstein’s general relativity theory framework, in particular a mass varying generalization of the McVittie’s spacetime.