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Multiscale cosmological dynamics

Author

Listed:
  • Chevalier, Claire
  • Debbasch, Fabrice
  • Ollivier, Yann

Abstract

The recently developed mean field theory of relativistic gravitation predicts the emergence of an “apparent matter” field at large scales describing the net effect of small-scale fluctuations on the large-scale dynamics of the universe. It is found that this so-called back reaction effect is much stronger for gravitational waves than for matter density fluctuations. At large scales, gravitational waves behave like radiation and, for them, the perturbative effect scales as the squared relative amplitude times squared frequency. In particular, a bath of gravitational waves of relative amplitude 10−5 and frequency 10−12Hz would not be directly detectable by today’s technology but would generate an effective large-scale radiation of amplitude comparable to the unperturbed matter density of the universe.

Suggested Citation

  • Chevalier, Claire & Debbasch, Fabrice & Ollivier, Yann, 2009. "Multiscale cosmological dynamics," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 388(24), pages 5029-5035.
    • Handle: RePEc:eee:phsmap:v:388:y:2009:i:24:p:5029-5035
    DOI: 10.1016/j.physa.2009.08.012
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    References listed on IDEAS

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    1. F. Debbasch, 2004. "What is a mean gravitational field?," The European Physical Journal B: Condensed Matter and Complex Systems, Springer;EDP Sciences, vol. 37(2), pages 257-269, January.
    2. Chevalier, C. & Debbasch, F., 2009. "Thermal statistical ensembles of classical extreme black holes," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 388(5), pages 628-638.
    3. Chevalier, C. & Bustamante, M. & Debbasch, F., 2007. "Thermal statistical ensembles of black holes," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 376(C), pages 293-307.
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    1. Chevalier, C. & Bustamante, M. & Debbasch, F., 2007. "Thermal statistical ensembles of black holes," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 376(C), pages 293-307.
    2. Chevalier, C. & Debbasch, F., 2009. "Thermal statistical ensembles of classical extreme black holes," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 388(5), pages 628-638.

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