Sökning: (L773:1361 6382 OR L773:0264 9381) >
Density growth in K...
Density growth in Kantowski-Sachs cosmologies with cosmological constant
-
- Bradley, Michael (författare)
- Umeå universitet,Institutionen för fysik
-
- Dunsby, Peter K S (författare)
- Dept. of Mathematics and Applied Mathematics, University of Cape Town
-
- Forsberg, Mats (författare)
- Umeå universitet,Institutionen för fysik
-
visa fler...
-
- Keresztes, Zoltán (författare)
- Dept. of Experimental Physics, University of Szeged
-
visa färre...
-
(creator_code:org_t)
- 2012-04-20
- 2012
- Engelska.
-
Ingår i: Classical and quantum gravity. - Bristol : Institute of Physics (IOP). - 0264-9381 .- 1361-6382. ; 29:9, s. 095023-
- Relaterad länk:
-
http://iopscience.io...
-
visa fler...
-
http://arxiv.org/pdf...
-
https://urn.kb.se/re...
-
https://doi.org/10.1...
-
visa färre...
Abstract
Ämnesord
Stäng
- In this work the growth of density perturbations in Kantowski-Sachs cosmologies with a positive cosmological constant is studied, using the 1+3 and 1+1+2 covariant formalisms. For each wave number we obtain a closed system for scalars formed from quantities that are zero on the background and hence are gauge-invariant. The solutions to this system are then analyzed both analytically andnumerically. In particular the effects of anisotropy and the behaviour close to a bounce in the cosmic scale factor are considered.We find that typically the density gradient in the bouncing direction experiences a local maximum at or slightly after the bounce.
Ämnesord
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Nyckelord
- fysik
- Physics
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
Hitta via bibliotek
Till lärosätets databas