Results 21 to 30 of about 61,982,689 (238)
Loops in Anti–de Sitter Space [PDF]
Physical Review Letters, 2018 6 ...
Bertan, Igor, Sachs, Ivo
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A spectral quadruple for de Sitter space [PDF]
Journal of Mathematical Physics, 2002 A set of data supposed to give possible axioms for spacetimes with a sufficient number of isometries in spectral geometry is given. These data are shown to be sufficient to obtain 1+1 dimensional de Sitter spacetime. The data rely at the moment somewhat on the guidance given by a required symmetry, in part to allow explicit calculations in a specific ...
Kopf, Tomáš, Paschke, Mario
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ON THE UNRUH EFFECT IN DE SITTER SPACE [PDF]
Modern Physics Letters A, 2011 We give an interpretation of the temperature in de Sitter universe in terms of a dynamical Unruh effect associated with the Hubble sphere. As with the quantum noise perceived by a uniformly accelerated observer in static spacetimes, observers endowed with a proper motion can in principle detect the effect.
CASADIO, ROBERTO +5 more
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The graviton four-point function in de Sitter space [PDF]
, 2023 We compute the tree-level late-time graviton four-point correlation function, and the related quartic wavefunction coefficient, for Einstein gravity in de Sitter spacetime.
Stefanyszyn, David +4 more
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Exploring de Sitter space and holography [PDF]
Annals of Physics, 2003 We explore aspects of the physics of de Sitter (dS) space that are relevant to holography with a positive cosmological constant. First we display a nonlocal map that commutes with the de Sitter isometries, transforms the bulk-boundary propagator and solutions of free wave equations in de Sitter onto the same quantities in Euclidean anti-de Sitter (EAdS)
Balasubramanian, V. +2 more
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Generalized de Sitter space [PDF]
Physical Review D, 1999 10 pages, RevTex, to appear in Phys.
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Features of the geometry of the five-dimensional pseudo-Euclidean space of index two [PDF]
E3S Web of ConferencesThe article is devoted to the study of the geometry of subspaces of a five-dimensional pseudo-Euclidean space. This space is attractive because all kinds of semi-Euclidean, semi-pseudo-Euclidean, hyperbolic three-dimensional spaces with projective ...
Artikbaev A., Mamadaliyev B.M.
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de Sitter space and spatial topology [PDF]
Classical and Quantum Gravity, 1999 Morrow-Jones and Witt have shown that generic spatial topologies admit initial data that evolve to locally de Sitter spacetimes under Einstein's equations. We simplify their arguments, make them a little more general, and solve for the global time evolution of the wormhole initial data considered by them. Finally we give explicit examples of locally de
Bengtsson, Ingemar, Holst, Sören
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On thermalization in de Sitter space
Journal of High Energy Physics, 2004 We discuss thermalization in de Sitter space and argue, from two different points of view, that the typical time needed for thermalization is of order $R^{3}/l_{pl}^{2}$, where $R$ is the radius of the de Sitter space in question. This time scale gives plenty of room for non-thermal deviations to survive during long periods of inflation.
Danielsson, Ulf H., Olsson, Martin E.
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Aspects of Symmetry in de Sitter Space [PDF]
, 2014 We study various aspects of symmetry in four-dimensional de Sitter space (dS$_4 ...
Ng, Gim Seng
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