Causality constraints on cosmological perturbations

Details Causality constraints on cosmological perturbations Causality constraints on cosmological perturbations

Mar 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986apj...302...39a&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 302, March 1, 1986, p. 39-42.

Statistics

Computation

26

Big Bang Cosmology, Galactic Clusters, Perturbation Theory, Power Spectra, Relativity, Computational Astrophysics, Constraints, Integral Equations, Time Dependence

Scientific paper

Using recently derived integral constraints, the authors give a general-relativistic proof of the k4 power spectrum for perturbations generated by local, causal processes in a Robertson-Walker universe. If galactic clusters formed from such fluctuations and if light traces mass, then in order to reconcile the integral constraints with observed cluster-cluster correlations, these perturbations must have been created when the age of the universe was greater than a few thousand years. Inflation provides a way out of this bound.

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