Adiabatic Invariants and Scalar Fields in a de Sitter Space-Time

Details Adiabatic Invariants and Scalar Fields in a de Sitter Space-Time Adiabatic Invariants and Scalar Fields in a de Sitter Space-Time

1997-06-19

arxiv.org/abs/gr-qc/9706061v1

Phys.Lett.A237:331-336,1998

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

9 pages, Latex, no figures

Scientific paper

10.1016/S0375-9601(97)00707-X

The method of adiabatic invariants for time dependent Hamiltonians is applied to a massive scalar field in a de Sitter space-time. The scalar field ground state, its Fock space and coherent states are constructed and related to the particle states. Diverse quantities of physical interest are illustrated, such as particle creation and the way a classical probability distribution emerges for the system at late times.

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