2000/06/30 by P. P. Avelino, C. J. A. P. Martins
Physics and Astronomy · #Astrophysics #COSMIC cancer database #Cosmic microwave background #Cosmic ray #Cosmology #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Galaxies: Formation, Evolution, Phenomena #Gaussian #Gaussian network model #Metric (unit) #Physics #Primordial fluctuations #Quantum mechanics #Standard Model (mathematical formulation) #Statistical physics #Theoretical physics #astro-ph
paper · pdf · doi:10.1016/s0370-2693(01)00926-1
published as Phys.Lett. B516 (2001) 191-196 · Minor changes; to appear in Phys. Lett. B
arxiv created 2001/07/25 · openalex publication_date 2001/09/01 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We extend our recent work on “two-metric” theories of gravity by showing how in such models cosmic defects can produce a spectrum of primordial Gaussian density perturbations. This will happen when the speed characterising the decay products of the defect network is much larger than the speed characterising gravity and all standard model particles. This model will exactly mimic all the standard predictions of inflationary models, and the only way of distinguishing the two will be via the detection of the decay products of the network.