Bachelor/master dissertation (Dissertations and theses)
Backreaction and the Covariant Formalism of General Relativity
Magni, Stefano
2012
 

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Keywords :
General Relativity and Quantum Cosmology; Astrophysics - Cosmology and Extragalactic Astrophysics
Abstract :
[en] This thesis is a review of backreaction, which is a possible alternative to dark energy and modified gravity. We describe in detail the 3+1 covariant formalism and Frobenius' theorem. We present the averaging procedure developed by Buchert, the Buchert equations and the generalization of these equations to the case of general matter. We then generalize to arbitrary number of spatial dimensions. We focus on the case of 2+1 dimensions, where the relation between the topology and the geometry of a surface imposes a global constraint on backreaction.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Magni, Stefano ;  University of Luxembourg > Luxembourg Centre for Systems Biomedicine (LCSB)
Language :
English
Title :
Backreaction and the Covariant Formalism of General Relativity
Defense date :
01 February 2012
Institution :
UNIPV - Università degli Studi di Pavia, Pavia, Italy
Degree :
Master Degree in Theoretical Physics
Promotor :
Carfora, Mauro
Rasanen, Syksy
Commentary :
96 pages, 3 figures, master thesis; supervisors: S.R\"as\"anen and M.Carfora
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since 14 September 2018

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