Finite particle creation in 3+1 de Sitter space
D. J. Lamb, A. Z. Capri, M. Kobayashi
Abstract
In this paper we calculate the particle creation as seen by a stationary observer in 3+1 de Sitter space. This particle creation is calculated using an observer dependent geometrically based definition of time which is used to quantize a field on two different spacelike surfaces. The Bogolubov transformation relating these two quantizations is then calculated and the resulting particle creation is shown to be finite.
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