Cosmological Parameters Are Dressed

Thomas Buchert and Mauro Carfora
Phys. Rev. Lett. 90, 031101 – Published 23 January 2003

Abstract

In the context of the averaging problem in relativistic cosmology, we provide a key to the interpretation of cosmological parameters by taking into account the actual inhomogeneous geometry of the Universe. We discuss the relation between “bare” cosmological parameters determining the cosmological model and the parameters interpreted by observers with a “Friedmannian bias,” which are “dressed” by the smoothed-out geometrical inhomogeneities of the surveyed spatial region.

  • Received 15 October 2002

DOI:https://doi.org/10.1103/PhysRevLett.90.031101

©2003 American Physical Society

Authors & Affiliations

Thomas Buchert1,* and Mauro Carfora2,†

  • 1Theoretische Physik, Ludwig-Maximilians-Universität, Theresienstrasse 37, D-80333 München, Germany and Department of Physics and Research Center for the Early Universe (RESCEU), School of Science, The University of Tokyo, Tokyo 113-0033, Japan
  • 2Dipartimento di Fisica Nucleare e Teorica, Università degli Studi di Pavia and Istituto Nazionale di Fisica Nucleare, Sezione di Pavia, via A. Bassi 6, I-27100 Pavia, Italy

  • *Email address: buchert@theorie.physik.uni-muenchen.de
  • Email address: mauro.carfora@pv.infn.it

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Issue

Vol. 90, Iss. 3 — 24 January 2003

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