No absorption in de Sitter space

2003/02/19 by Y. S. Myung, Y S Myung, H. W. Lee +1 · 13 citations
Physics and Astronomy · #Absorption (acoustics) #Anti-de Sitter space #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Curvature #De Sitter space #De Sitter universe #Pulsars and Gravitational Waves Research #Scalar (mathematics) #de Sitter invariant special relativity #de Sitter–Schwarzschild metric #hep-th

paper · pdf · doi:10.1088/0264-9381/20/16/301

published in Classical and Quantum Gravity 20(16), 3533-3542 (IOP Publishing) · 11 pages, REVTEX

arxiv created 2003/02/19 · openalex publication_date 2003/07/22 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We study the wave equation for a minimally coupled massive scalar in D -dimensional de Sitter space. We compute the absorption cross section to investigate the property of the cosmological horizon in the southern diamond of de Sitter space. It is found that there is no absorption of radiation by the cosmological horizon of de Sitter space at the classical level. This means that the de Sitter space is usually in thermal equilibrium with the external scalar perturbation. It confirms that the cosmological horizon not only absorbs radiation of the scalar but also emits that previously absorbed by itself at the same rate, keeping the curvature radius of de Sitter space fixed. Finally, we discuss the dS/CFT correspondence in the context of the wave equation approach.

Citations

• Universality of Low Energy Absorption Cross Sections for Black Holes
• Positive vacuum energy and the N-bound
• Action, Mass and Entropy of Schwarzschild-de Sitter black holes and the de Sitter/CFT Correspondence
• Fixed scalars and suppression of Hawking evaporation
• Entropy of (2+1) dimensional de Sitter space in terms of the brick wall method
• Absorption of fixed scalars and the D-brane approach to black holes
• The dS/CFT correspondence