Europhys. Lett.
Volume 72, Number 6, December 2005
Page(s) 1045 - 1051
Section Geophysics, astronomy, and astrophysics
Published online 11 November 2005
Europhys. Lett., 72 (6), pp. 1045-1051 (2005)
DOI: 10.1209/epl/i2005-10327-4

Temperature at horizon in de Sitter spacetime

H.-Y. Guo1, 2, C.-G. Huang1 and B. Zhou2, 3

1  Institute of High Energy Physics, Chinese Academy of Sciences P.O. Box 918-4, Beijing 100049, PRC
2  Institute of Theoretical Physics, Chinese Academy of Sciences P.O. Box 2735, Beijing 100080, PRC
3  Department of Physics, Beijing Normal University - Beijing 100875, PRC

received 25 June 2005; accepted in final form 13 October 2005
published online 11 November 2005

It is found that there is no period in the imaginary Beltrami time of the de Sitter spacetime with Beltrami metric and that the "surface-gravity" in view of inertial observers in de Sitter spacetime is zero! They show that the horizon might be at zero temperature in de Sitter spacetime and that the thermal property of the horizon in the de Sitter spacetime with a static metric should be analogous to that of the Rindler horizon in Minkowski spacetime.

98.80.Jk - Mathematical and relativistic aspects of cosmology.
11.10.Wx - Finite-temperature field theory.
04.70.Dy - Quantum aspects of black holes, evaporation, thermodynamics.

© EDP Sciences 2005