Generation of Primordial Cosmological Perturbations from Statistical Mechanical Models

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dc.creatorGabrielli, A.
dc.creatorJancovici, B.
dc.creatorJoyce, M.
dc.creatorLebowitz, J. L.
dc.creatorPietronero, L.
dc.creatorLabini, F. Sylos
dc.date2002-10-01
dc.date2002-12-13
dc.date.accessioned2026-07-07T11:46:02Z
dc.date.available2026-07-07T11:46:02Z
dc.descriptionThe initial conditions describing seed fluctuations for the formation of structure in standard cosmological models, i.e.the Harrison-Zeldovich distribution, have very characteristic ``super-homogeneous'' properties: they are statistically translation invariant, isotropic, and the variance of the mass fluctuations in a region of volume V grows slower than V. We discuss the geometrical construction of distributions of points in ${\bf R}^3$ with similar properties encountered in tiling and in statistical physics, e.g. the Gibbs distribution of a one-component system of charged particles in a uniform background (OCP). Modifications of the OCP can produce equilibrium correlations of the kind assumed in the cosmological context. We then describe how such systems can be used for the generation of initial conditions in gravitational $N$-body simulations.
dc.description7 pages, 3 figures, final version with minor modifications, to appear in PRD
dc.identifierhttps://arxiv.org/abs/astro-ph/0210033
dc.identifierhttp://arxiv.org/abs/astro-ph/0210033
dc.identifierPhys.Rev.D67:043506,2003
dc.identifierdoi:10.1103/PhysRevD.67.043506
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/202087
dc.subjectAstrophysics
dc.subjectStatistical Mechanics
dc.subjectHigh Energy Physics - Phenomenology
dc.titleGeneration of Primordial Cosmological Perturbations from Statistical Mechanical Models
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