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New Coordinates for de Sitter Space and de Sitter Radiation | | Maulik K. Parikh
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14 Apr 2002 | | Journal: | Phys.Lett. B546 (2002) 189-195 DOI: 10.1016/S0370-2693(02)02701-6 | | Subject: | hep-th gr-qc | | 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. | | Source: | arXiv, hep-th/0204107 | | Services: | Forum | Review | PDF | Favorites | |
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