The CWKB Method of Particle Production in Periodic Potential

Details The CWKB Method of Particle Production in Periodic Potential The CWKB Method of Particle Production in Periodic Potential

2002-05-17

arxiv.org/abs/gr-qc/0205076v1

Gen.Rel.Grav. 35 (2003) 1-16

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

17 pages, latex, 2 figures

Scientific paper

In this work we study the particle production in time dependent periodic potential using the method of complex time WKB (CWKB) approximation. In the inflationary cosmology at the end of inflationary stage, the potential becomes time dependent as well as periodic. Reheating occurs due to particle production by the oscillating inflaton field. Using CWKB we obtain almost identical results on catastrophic particle production as obtained by others.

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