New coordinates for de Sitter space and de Sitter radiation

Research output: Contribution to journalArticle

237 Citations (Scopus)

Abstract

We introduce a simple coordinate system covering half of de Sitter space. The new coordinates have several attractive properties: the time direction is a Killing vector, the metric is smooth at the horizon, and constant-time slices are just flat Euclidean space. We demonstrate the usefulness of the coordinates by calculating the rate at which particles tunnel across the horizon. When self-gravitation is taken into account, the resulting tunneling rate is only approximately thermal. The effective temperature decreases through the emission of radiation.

Original languageEnglish (US)
Pages (from-to)189-195
Number of pages7
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume546
Issue number3-4
DOIs
StatePublished - Oct 24 2002
Externally publishedYes

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horizon
radiation
Euclidean geometry
time constant
tunnels
coverings
gravitation
temperature

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

New coordinates for de Sitter space and de Sitter radiation. / Parikh, Maulik.

In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol. 546, No. 3-4, 24.10.2002, p. 189-195.

Research output: Contribution to journalArticle

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