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Cosmological parameters are dressed

Thomas Buchert·Mauro Carfora
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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.

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Thomas Buchert, Mauro Carfora. 2002-10-15. Cosmological parameters are dressed. https://doi.org/10.1103/physrevlett.90.031101

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