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Dynamical backreaction of relic gravitons

Massimo Giovannini*

  • Centro “Enrico Fermi”, Compendio del Viminale, Via Panisperna 89/A, 00184 Rome, Italy and Department of Physics, Theory Division, CERN, 1211 Geneva 23, Switzerland

  • *Electronic address: massimo.giovannini@cern.ch
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Phys. Rev. D 73, 083505 – Published 5 April, 2006

DOI: https://doi.org/10.1103/PhysRevD.73.083505

Abstract

The dynamical effects of the tensor modes of the geometry are investigated in the context of curvature bounces. Since the bouncing behavior implies sharp deviations from a radiation-dominated evolution, significant backreaction effects of relic gravitons may be expected at short wavelengths. After developing a general iterative framework for the calculation of dynamical backreaction effects, explicit analytical and numerical examples are investigated for different parametrizations of the energy-momentum pseudotensor(s) of the produced gravitons. The reported results suggest that dynamical backreaction effects are a necessary ingredient for a consistent description of bouncing models at late times.

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Phys. Rev. D 73, 083505– Published 5 April, 2006
  • Received 15 January 2006

© 2006 American Physical Society

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