Duality invariance and cosmological dynamics

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dc.creatorChimento, Luis P.
dc.creatorZimdahl, Winfried
dc.date2006-09-23
dc.date2008-02-01
dc.date.accessioned2026-07-07T12:39:59Z
dc.date.available2026-07-07T12:39:59Z
dc.descriptionA duality transformation that interrelates expanding and contracting cosmological models is shown to single out a duality invariant, interacting two-component description of any irrotational, geodesic and shearfree cosmic medium with vanishing three curvature scalar. We apply this feature to a system of matter and radiation, to a mixture of dark matter and dark energy, to minimal and conformal scalar fields, and to an enlarged Chaplygin gas model of the cosmic substratum. We extend the concept of duality transformations to cosmological perturbations and demonstrate the invariance of adiabatic pressure perturbations under these transformations.
dc.description14 pages, Discussion enlarged, accepted for publication in IJMPD
dc.identifierhttps://arxiv.org/abs/gr-qc/0609104
dc.identifierhttp://arxiv.org/abs/gr-qc/0609104
dc.identifierInt.J.Mod.Phys.D17:2229-2254,2008
dc.identifierdoi:10.1142/S0218271808013820
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/219312
dc.subjectGeneral Relativity and Quantum Cosmology
dc.subjectAstrophysics
dc.subjectHigh Energy Physics - Theory
dc.titleDuality invariance and cosmological dynamics
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