New coordinates for de Sitter space and de Sitter radiation

Research output: Contribution to journalArticlepeer-review

256 Scopus citations


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
Issue number3-4
StatePublished - Oct 24 2002
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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