New coordinates for de Sitter space and de Sitter radiation

By Maulik Parikh. 2002

279 citations recorded by the source corpus.

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.

Subfields: Astronomy and Astrophysics, Atomic and Molecular Physics, and Optics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/88ec88b2fdd635630766666033acb1839dc14ec6

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Astronomy and Astrophysics

In Atomic and Molecular Physics, and Optics

In Nuclear and High Energy Physics

Citations in the corpus

Remarks on Hawking radiation as tunneling from the BTZ black holes (2006, unknown): “Ever since Parikh and Wilczek [1] put forward a semiclassica l framework (see also [2] for early works underlying the basis of this framework) to imple ment Hawking radiation as a tunneling process across the horizon of the static spherically symmet ric black holes and demonstrated that the emission”
Radiation via Tunneling from a de Sitter Cosmological Horizon (2002, methodology): “Adapting the methodology of Kraus, Wilczek [17] and others (including a recent, related work by Parikh [25]), we were able to calculate the rate of particle emission from a cosmological horizon.”
Charged fermions tunnelling from Kerr–Newman black holes (2008, methodology): “Tunnelling methods have even been applied to horizons that are not black hole horizons including those with cosmological horizons [5],[6],[25],and Rindler Spacetimes [4],[14],[24] for which it has been shown the Unruh temperature [30] is in fact recovered.”
Hawking radiation as tunneling for extremal and rotating black holes (2005, unknown): “A comparison with other approaches is presented.”