論文

査読有り
2008年1月

Self-similar cosmological solutions with dark energy. II. Black holes, naked singularities, and wormholes

PHYSICAL REVIEW D
  • Hideki Maeda
  • ,
  • Tomohiro Harada
  • ,
  • B. J. Carr

77
2
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1103/PhysRevD.77.024023
出版者・発行元
AMER PHYSICAL SOC

We use a combination of numerical and analytical methods, exploiting the equations derived in a preceding paper, to classify all spherically symmetric self-similar solutions which are asymptotically Friedmann at large distances and contain a perfect fluid with equation of state p=(gamma-1)mu with 0 < gamma < 2/3. The expansion of the Friedmann universe is accelerated in this case. We find a one-parameter family of self-similar solutions representing a black hole embedded in a Friedmann background. This suggests that, in contrast to the positive pressure case, black holes in a universe with dark energy can grow as fast as the Hubble horizon if they are not too large. There are also self-similar solutions which contain a central naked singularity with negative mass and solutions which represent a Friedmann universe connected to either another Friedmann universe or some other cosmological model. The latter are interpreted as self-similar cosmological white hole or wormhole solutions. The throats of these wormholes are defined as two-dimensional spheres with minimal area on a spacelike hypersurface and they are all nontraversable because of the absence of a past null infinity.


リンク情報
DOI
https://doi.org/10.1103/PhysRevD.77.024023
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000252864000073&DestApp=WOS_CPL
ID情報
  • DOI : 10.1103/PhysRevD.77.024023
  • ISSN : 2470-0010
  • eISSN : 2470-0029
  • Web of Science ID : WOS:000252864000073

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