Quantum Fluctuations in Open Pre-Big Bang Cosmology
classification
✦ hep-th
astro-phgr-qchep-ph
keywords
bangpre-bigfluctuationsopenamplificationauthorscosmologydiscussed
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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.
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