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arXiv · hep-th/0204107

New Coordinates for de Sitter Space and de Sitter Radiation

Maulik K. Parikh
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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.

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Maulik K. Parikh. 2002-10-02. New Coordinates for de Sitter Space and de Sitter Radiation. https://doi.org/10.1016/s0370-2693(02)02701-6

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