corner
corner
APS » Journals » Phys. Rev. Lett. » Volume 90 » Issue 3
< Previous Article | Next Article >

Phys. Rev. Lett. 90, 031101 (2003) [4 pages]

Cosmological Parameters Are Dressed

Download: PDF (91 kB) Buy this article Export: BibTeX or EndNote (RIS)

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

Received 15 October 2002; published 23 January 2003

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.

© 2003 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.90.031101
DOI:
10.1103/PhysRevLett.90.031101
PACS:
04.20.Cv, 02.40.Ky, 95.30.–k, 98.80.Es

*Email address: buchert@theorie.physik.uni-muenchen.de

†Email address: mauro.carfora@pv.infn.it

 
< Previous Article | Next Article >