scholarly journals Massless scalar and antisymmetric tensor fields in de Sitter space

1988 ◽  
Vol 37 (10) ◽  
pp. 2872-2877 ◽  
Author(s):  
Chandra Pathinayake ◽  
Alexander Vilenkin ◽  
Bruce Allen
Keyword(s):  
De Sitter Space ◽  
Antisymmetric Tensor ◽  
Massless Scalar ◽  
De Sitter ◽  
Tensor Fields

scholarly journals Coherent (spin-)tensor fields on D = 4 anti-de Sitter space

1999 ◽  
Vol 16 (11) ◽  
pp. 3483-3496 ◽  
Author(s):  
A Yu Segal ◽  
A A Sharapov
Keyword(s):  
De Sitter Space ◽  
Spin Tensor ◽  
De Sitter ◽  
Tensor Fields ◽  
Coherent Spin

scholarly journals TURBULENT INSTABILITY OF ANTI-DE SITTER SPACE–TIME

2013 ◽  
Vol 28 (22n23) ◽  
pp. 1340020 ◽  
Author(s):  
MACIEJ MALIBORSKI ◽  
ANDRZEJ ROSTWOROWSKI
Keyword(s):  
Scalar Field ◽  
Cosmological Constant ◽  
Numerical Study ◽  
De Sitter Space ◽  
Massless Scalar ◽  
Massless Scalar Field ◽  
Spherically Symmetric ◽  
De Sitter ◽  
Field System ◽  
Technical Details

In these lecture notes, we discuss recently conjectured instability of anti-de Sitter space, resulting in gravitational collapse of a large class of arbitrarily small initial perturbations. We uncover the technical details used in the numerical study of spherically symmetric Einstein-massless scalar field system with negative cosmological constant that led to the conjectured instability.

scholarly journals QUANTUM FLUCTUATIONS FOR A SCALAR FIELD IN THE SPACE–TIME OF GRAVITATIONAL IMPLUSIVE WAVE

1998 ◽  
Vol 13 (08) ◽  
pp. 1201-1211 ◽  
Author(s):  
Y. ENGINER ◽  
M. HORTAÇSU ◽  
N. ÖZDEMIR
Keyword(s):  
Scalar Field ◽  
Gravitational Waves ◽  
Quantum Fluctuations ◽  
De Sitter Space ◽  
Space Time ◽  
Massless Scalar ◽  
Massless Scalar Field ◽  
De Sitter

Quantum fluctuations for a massless scalar field in the background metric of spherical implusive gravitational waves propagating through Minkowski and de Sitter spaces are investigated. It is shown that there exist finite fluctuations for de Sitter space.

scholarly journals Quantum steering for continuous variable in de Sitter space

2020 ◽  
Vol 80 (2) ◽  
Author(s):  
Cuihong Wen ◽  
Jieci Wang ◽  
Jiliang Jing
Keyword(s):  
Sudden Death ◽  
Scalar Fields ◽  
Flat Space ◽  
De Sitter Space ◽  
Continuous Variable ◽  
Massless Scalar ◽  
Continuous Variables ◽  
De Sitter ◽  
Quantum Steering ◽  
The Asymmetry

Abstract We study the distribution of quantum steerability for continuous variables between two causally disconnected open charts in de Sitter space. It is shown that quantum steerability suffers from “sudden death” in de Sitter space, which is quite different from the behaviors of entanglement and discord because the latter always survives and the former vanishes only in the limit of infinite curvature. It is found that the attainment of maximal steerability asymmetry indicates a transition between unidirectional steerable and bidirectional steerable. Unlike in the flat space, the asymmetry of quantum steerability can be completely destroyed in the limit of infinite curvature for the conformal and massless scalar fields in de Sitter space.

scholarly journals VACUUM QUANTUM EFFECT FOR PARALLEL PLATES MOVING BY UNIFORM ACCELERATION IN STATIC DE SITTER SPACE

2005 ◽  
Vol 20 (24) ◽  
pp. 5679-5688 ◽  
Author(s):  
M. R. SETARE
Keyword(s):  
Quantum Effect ◽  
Vacuum Expectation ◽  
De Sitter Space ◽  
Dirichlet Boundary Conditions ◽  
Massless Scalar ◽  
Massless Scalar Field ◽  
Parallel Plates ◽  
De Sitter ◽  
Casimir Forces ◽  
Conformally Invariant

The Casimir forces on two parallel plates moving by uniform proper acceleration in static de Sitter background due to conformally coupled massless scalar field satisfying Dirichlet boundary conditions on the plates is investigated. Static de Sitter space is conformally related to the Rindler space, as a result we can obtain vacuum expectation values of energy–momentum tensor for conformally invariant field in static de Sitter space from the corresponding Rindler counterpart by the conformal transformation.

scholarly journals The motion of a relativistic charged particle in a homogenous electromagnetic field in De-Sitter space

2018 ◽  
Vol 64 (2) ◽  
pp. 176 ◽  
Author(s):  
Ridvan Cem Demirkol ◽  
Talat Körpinar
Keyword(s):  
Electromagnetic Field ◽  
Charged Particle ◽  
De Sitter Space ◽  
Geometric Characterization ◽  
Antisymmetric Tensor ◽  
De Sitter ◽  
Relativistic Approach ◽  
Relativistic Charged Particle

We discuss the geometric characterization of the trajectoryof a moving charged particle, for the case of a homogeneous electromagnetic…eld, in De-Sitter space when the motion is governed by the Lorentz equa-tion. We employ totally relativistic approach during the discussion and itis based on a systematic use of the four-dimensional Frenet-Serret formulae,which is adapted to the De-Sitter space to determine the worldline geometryof the electromagnetic …eld acting on the particle in De-Sitter space, and ofthe Faraday antisymmetric tensor properties.

scholarly journals Correlation functions of massless interacting scalar fields in de Sitter space

2015 ◽  
Vol 30 (26) ◽  
pp. 1550173 ◽  
Author(s):  
Arvind Rajaraman
Keyword(s):  
Correlation Functions ◽  
Scalar Fields ◽  
De Sitter Space ◽  
Massless Scalar ◽  
Massless Scalar Field ◽  
High Momentum ◽  
De Sitter ◽  
Complicated Structure ◽  
Dynamical Mass ◽  
Quartic Interaction

In this paper, we examine the behavior of correlation functions for a massless scalar field in de Sitter space with a quartic interaction. We find that two-loop corrections are relevant, and the resummation of these corrections generates a complicated structure whereby high momentum modes stay massless while low momentum modes develop a dynamical mass.

scholarly journals ABSORPTION CROSS-SECTION IN DE SITTER SPACE

2003 ◽  
Vol 18 (09) ◽  
pp. 617-628 ◽  
Author(s):  
Y. S. MYUNG
Keyword(s):  
Cross Section ◽  
Absorption Cross Section ◽  
Three Dimensional ◽  
De Sitter Space ◽  
Temperature Limit ◽  
Low Energy ◽  
Massless Scalar ◽  
Cosmological Horizon ◽  
Absorption Cross ◽  
De Sitter

We study the wave equation for a minimally coupled massive scalar in three-dimensional de Sitter space. We compute the absorption cross-section to investigate its cosmological horizon in the southern diamond. Although the absorption cross-section is not defined exactly, it can be determined from the fact that the low-energy s(j = 0)-wave absorption cross-section for a massless scalar is given by the area of the cosmological horizon. On the other hand, the low-temperature limit of j ≠ 0-mode absorption cross-section is useful for extracting information surrounding the cosmological horizon. Finally we mention a computation of the absorption cross-section on the CFT-side using the dS/CFT correspondence.

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