Evolution of perturbations in a domain wall cosmology

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dc.creatorFabris, J. C.
dc.creatorGoncalves, S. V. B.
dc.date2000-10-11
dc.date.accessioned2026-07-07T03:25:18Z
dc.date.available2026-07-07T03:25:18Z
dc.descriptionA fluid of domain walls has an effective equation of state $p_w = - {2/3}ρ_w$. This equation of state is qualitativelly in agreement with the supernova type Ia observations. We exploit a cosmological model where the matter content is given by a dust fluid and a domain wall fluid. The process of formation of galaxies is essentially preserved. On the other hand, the behaviour of the density contrast in the ordinary fluid is highly altered when domain walls begin to dominate the matter content of the Universe. This domain wall phase occurs at relative recent era, and its possible consequences are discussed, specially concerning the Sachs-Wolfe effect.
dc.descriptionLatex file, 8 pages
dc.identifierhttps://arxiv.org/abs/gr-qc/0010046
dc.identifierhttp://arxiv.org/abs/gr-qc/0010046
dc.identifierBraz.J.Phys. 33 (2003) 834-839
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/33659
dc.subjectGeneral Relativity and Quantum Cosmology
dc.subjectAstrophysics
dc.titleEvolution of perturbations in a domain wall cosmology
dc.typetext

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