Unruh response functions for scalar fields in de Sitter space

Details Unruh response functions for scalar fields in de Sitter space Unruh response functions for scalar fields in de Sitter space

2004-04-13

arxiv.org/abs/gr-qc/0404058v2

Class.Quant.Grav. 21 (2004) 4993-5004

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

16 pages, 1 figure, accepted for publication by Classical and Quantum Gravity

Scientific paper

10.1088/0264-9381/21/21/016

We calculate the response functions of a freely falling Unruh detector in de
Sitter space coupled to scalar fields of different coupling to the curvature,
including the minimally coupled massless case. Although the responses differ
strongly in the infrared as a consequence of the amplification of superhorizon
modes, the energy levels of the detector are thermally populated.

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