Results 31 to 40 of about 61,982,689 (238)
Would quantum coherence be increased by curvature effect in de Sitter space?
Journal of High Energy Physics, 2023 We study the quantum coherence in de Sitter space for the bipartite system of Alice and Bob who initially share an entangled state between the two modes of a free massive scalar field.
Shu-Min Wu +4 more
doaj +1 more source
Dominant spacetime in three dimensional de Sitter gravity
Physics Letters B, 2023 In three dimensions, Kerr-de Sitter spacetime as a solution of Einstein gravity with positive cosmological constant has a single cosmological horizon. The flat-space limit (zero cosmological constant limit) of this spacetime is well-defined and yields ...
Reza Fareghbal, Vahid Reza Shajiee
doaj +1 more source
Tensors and spinors in de Sitter space
Journal of High Energy Physics, 2022 Abstract We construct the Wightman function for symmetric traceless tensors and Dirac fermions in dSd+1 in a coordinate and index free formalism using a d + 2 dimensional ambient space. We expand the embedding space formalism to cover spinor and tensor fields in any even or odd dimension.
Ben Pethybridge, Vladimir Schaub
openaire +3 more sources
Journal of High Energy Physics, 2018 We put forward new explicit realisations of dS/CFT that relate N $$ \mathcal{N} $$ = 2 supersymmetric Euclidean vector models with reversed spin-statistics in three dimensions to specific supersymmetric Vasiliev theories in four-dimensional de Sitter ...
Thomas Hertog +3 more
doaj +1 more source
De Sitter space and eternity [PDF]
Nuclear Physics B, 2008 27 pages important comments added.
openaire +2 more sources
Analytical evaluation of cosmological correlation functions
Journal of High Energy Physics, 2022 Using the Schwinger-Keldysh-formalism, reformulated in [1] as an effective field theory in Euclidean anti-de Sitter, we evaluate the one-loop cosmological four-point function of a conformally coupled interacting scalar field in de Sitter.
Till Heckelbacher +3 more
doaj +1 more source
de Sitter Space as a Resonance
Physical Review Letters, 2017 A quantum mechanical formulation of de Sitter cosmological spacetimes still eludes string theory. In this Letter we conjecture a potentially rigorous framework in which the status of de Sitter space is the same as that of a resonance in a scattering process.
Jonathan, Maltz, Leonard, Susskind
openaire +3 more sources
Proliferation of de Sitter space [PDF]
Physical Review D, 1998 19 pages, LaTeX2e, 4 ...
openaire +2 more sources
Festina lente:1 EFT constraints from charged black hole evaporation in de Sitter
Journal of High Energy Physics, 2020 In the Swampland philosophy of constraining EFTs from black hole mechanics we study charged black hole evaporation in de Sitter space. We establish how the black hole mass and charge change over time due to both Hawking radiation and Schwinger pair ...
Miguel Montero +2 more
doaj +1 more source
Gravitons in de sitter space [PDF]
, 1987 What has been shown in this talk is that the graviton propagator in de Sitter space is OK. If one makes a bad choice of gauge (-fixing term) then the propagator is infra-red divergent. However this is not a problem. You can either make a better choice of gauge (of which there are an infinite number), for which the propagator is completely, finite, or ...
openaire +2 more sources