Local Cosmology
Abstract
We define the concept of a Maximally symmetric osculating spacetime at any event of any given RobertsonWalker model. We use this definition in two circumstances: i) to approximate any given cosmological model by a simpler one sharing the same observational parameters, i.e, the speed of light, the Hubble constant and the deceleration parameter at the time of tangency, and ii) to shed some light on the problem of considering an eventual influence of the overall behaviour of the Universe on localized systems at smaller scales, or viceversa.
 Publication:

arXiv eprints
 Pub Date:
 June 2003
 DOI:
 10.48550/arXiv.grqc/0306091
 arXiv:
 arXiv:grqc/0306091
 Bibcode:
 2003gr.qc.....6091B
 Keywords:

 General Relativity and Quantum Cosmology
 EPrint:
 13 pages, Latex. Corrected typos