umu.sePublications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Density perturbations in Kantowski-Sachs models with a cosmological constant
Umeå University, Faculty of Science and Technology, Department of Physics.
Umeå University, Faculty of Science and Technology, Department of Physics.
University of Cape Town, South Africa.
2011 (English)In: J. Phys.: Conf. Ser. 314 012026: Spanish Relativity Meeting (ERE 2010): Gravity as a Crossroad in Physics / [ed] Víctor Aldaya, Carlos Barceló and José Luis Jaramillo, IOPscience , 2011Conference paper, Published paper (Refereed)
Abstract [en]

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 a closed system for eight scalars is obtained. These are formed from quantities that are zero on the background and hence are gauge invariant. As an example a numerical solution describing the evolution of density perturbations on a background that experiences a bounce is presented. Typically the density gradient in the bouncing directions experiences a local maxium at or slightly after the bounce.

Place, publisher, year, edition, pages
IOPscience , 2011.
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:umu:diva-47616DOI: 10.1088/1742-6596/314/1/012026OAI: oai:DiVA.org:umu-47616DiVA: diva2:443522
Conference
Spanish Relativity Meeting (ERE 2010): Gravity as a Crossroad in Physics
Available from: 2011-09-26 Created: 2011-09-26 Last updated: 2012-04-30

Open Access in DiVA

No full text

Other links

Publisher's full text

Authority records BETA

Forsberg, MatsBradley, Michael

Search in DiVA

By author/editor
Forsberg, MatsBradley, Michael
By organisation
Department of Physics
Physical Sciences

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 107 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf