Information Entropy in Cosmology

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dc.creatorHosoya, Akio
dc.creatorBuchert, Thomas
dc.creatorMorita, Masaaki
dc.date2004-02-17
dc.date.accessioned2026-07-07T03:28:28Z
dc.date.available2026-07-07T03:28:28Z
dc.descriptionThe effective evolution of an inhomogeneous cosmological model may be described in terms of spatially averaged variables. We point out that in this context, quite naturally, a measure arises which is identical to a fluid model of the `Kullback-Leibler Relative Information Entropy', expressing the distinguishability of the local inhomogeneous mass density field from its spatial average on arbitrary compact domains. We discuss the time-evolution of `effective information' and explore some implications. We conjecture that the information content of the Universe -- measured by Relative Information Entropy of a cosmological model containing dust matter -- is increasing.
dc.descriptionLateX, PRLstyle, 4 pages; to appear in PRL
dc.identifierhttps://arxiv.org/abs/gr-qc/0402076
dc.identifierhttp://arxiv.org/abs/gr-qc/0402076
dc.identifierPhys.Rev.Lett. 92 (2004) 141302
dc.identifierdoi:10.1103/PhysRevLett.92.141302
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/34846
dc.subjectGeneral Relativity and Quantum Cosmology
dc.subjectAstrophysics
dc.titleInformation Entropy in Cosmology
dc.typetext

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