Generalized Robertson–Walker spacetimes extend the notion of Robertson–Walker spacetimes, by allowing for spatial non-homogeneity. A survey is presented, with main focus on Chen’s characterization in terms of a timelike concircular vector. Together with their most important properties, some new results are presented.
Generalized Robertson–Walker spacetimes : a survey / C.A. Mantica, L.G. Molinari. - In: INTERNATIONAL JOURNAL OF GEOMETRIC METHODS IN MODERN PHYSICS. - ISSN 0219-8878. - 14:3(2017 Feb 03), pp. 1730001.1-1730001.27. [10.1142/S021988781730001X]
Generalized Robertson–Walker spacetimes : a survey
C.A. Mantica;L.G. MolinariUltimo
2017
Abstract
Generalized Robertson–Walker spacetimes extend the notion of Robertson–Walker spacetimes, by allowing for spatial non-homogeneity. A survey is presented, with main focus on Chen’s characterization in terms of a timelike concircular vector. Together with their most important properties, some new results are presented.
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