Unified treatment of cosmological perturbations from super-horizon to small scales

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dc.creatorCarbone, Carmelita
dc.creatorMatarrese, Sabino
dc.date2004-07-29
dc.date2005-02-18
dc.date.accessioned2026-07-07T02:14:09Z
dc.date.available2026-07-07T02:14:09Z
dc.descriptionWe study the evolution of cosmological perturbations, using a hybrid approximation scheme which upgrades the weak-field limit of Einstein's field equations to account for post-Newtonian scalar and vector metric perturbations and for leading-order source terms of gravitational waves, while including also the first and second-order perturbative approximations. Our equations, which are derived in the Poisson gauge, provide a unified description of matter inhomogeneities in a Universe filled with a pressureless and irrotational fluid and a cosmological constant, ranging from the linear to the highly non-linear regime. The derived expressions for scalar, vector and tensor modes can have a wide range of cosmological applications, ranging from secondary CMB anisotropy and polarization effects, cosmographic relations in a inhomogeneous Universe, gravitational lensing effects and the stochastic gravitational-wave backgrounds generated by non-linear cosmic structures.
dc.descriptionLaTeX file, 13 pages, typos corrected, improved calculations, new section added, matches published version
dc.identifierhttps://arxiv.org/abs/astro-ph/0407611
dc.identifierhttp://arxiv.org/abs/astro-ph/0407611
dc.identifierPhys.Rev. D71 (2005) 043508
dc.identifierdoi:10.1103/PhysRevD.71.043508
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/8011
dc.subjectAstrophysics
dc.subjectGeneral Relativity and Quantum Cosmology
dc.subjectHigh Energy Physics - Phenomenology
dc.titleUnified treatment of cosmological perturbations from super-horizon to small scales
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