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SUPERLUMINARY UNIVERSE: A POSSIBLE SOLUTION TO THE INITIAL VALUE PROBLEM IN COSMOLOGY

1992/11/30 by J. W. Moffat · 11 citations
Mathematics · Physics and Astronomy · #Cosmology and Gravitation Theories #Relativity and Gravitational Theory #advanced mathematical theories #astro-ph #gr-qc #hep-th

paper · pdf · doi:10.1142/s0218271893000246

published as Int.J.Mod.Phys.D2:351-366,1993 · Updated version (with the exception of two figures not included) of paper published in: International Journal of Modern Physics D, Vol. 2, No. 3 (1993) 351-365

openalex publication_date 1993/09/01 · arxiv created 1998/11/14 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

The spontaneous breaking of local Lorentz invariance in the early Universe, associated with a first order phase transition at a critical time t c , generates a large increase in the speed of light and a superluminary communication of information occurs, allowing all regions in the Universe to be causally connected. This solves the horizon problem, leads to a mechanism of monopole suppression in cosmology and can resolve the flatness problem. After the critical time t c , local Lorentz (and diffeomorphism) invariance is restored and light travels at its presently measured speed. The kinematical and dynamical aspects of the generation of quantum fluctuations in the superluminary Universe are investigated. A scale invariant prediction for the fluctuation density amplitude is obtained.

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