Particle production in expanding universes with path integrals
- 15 August 1986
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review D
- Vol. 34 (4) , 959-968
- https://doi.org/10.1103/physrevd.34.959
Abstract
A method is developed to calculate path integrations for a scalar particle moving in the spatially flat Robertson-Walker spacetime with scale factor a(t). For three cases, which are specified by a(t)=t, a(t)= √t , and a(t)=, exact path-integral calculations are presented and particle pair productions are studied.
Keywords
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