arXiv:hep-th/9806233·v2·High Energy Physics — Theory
Quantum Fluctuations in Open Pre-Big Bang Cosmology
A. Ghosh🇨🇭 · G. Pollifrone🇨🇭 · G. Veneziano (CERN)🇨🇭
Abstract
We solve exactly the (linear order) equations for tensor and scalar perturbations over the homogeneous, isotropic, open pre-big bang model recently discussed by several authors. We find that the parametric amplification of vacuum fluctuations (i.e. particle production) remains negligible throughout the perturbative pre-big bang phase.
Comments: 12 pages, ReVTeX, Discussion of relation to Ref.[8] modified