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Perturbations of Kantowski-Sachs models
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- Bradley, Michael (author)
- Umeå universitet,Institutionen för fysik
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- Forsberg, Mats (author)
- Umeå universitet,Institutionen för fysik
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- Keresztes, Zoltán (author)
- Departments of Theoretical Physics and Experimental Physics, University of Szeged, Hungary
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- (creator_code:org_t)
- 2015-01-29
- 2015
- English.
- In: Proceedings of the thirteenth Marcel Grossman meeting on general relativity. - Singapore : World Scientific. - 9789814612142 - 9789814630009 ; , s. 2547-2549
- Conference paper (peer-reviewed)
Abstract
Subject headings
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- Perturbations of Kantowski-Sachs models with a positive cosmological constant are considered in a harmonic decomposition, in the framework of gauge invariant 1+3 and 1+1+2 covariant splits of spacetime. Scalar, vector and tensor modes are allowed, however they remain vorticity-free and of perfect fluid type. The dynamics is encompassed in six evolution equations for six harmonic coefficients.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Keyword
- teoretisk fysik
- Theoretical Physics
Publication and Content Type
- ref (subject category)
- kon (subject category)
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