論文

査読有り
2015年11月17日

Does the Gauss-Bonnet term stabilize wormholes?

Classical and Quantum Gravity
  • Takafumi Kokubu
  • ,
  • Hideki Maeda
  • ,
  • Tomohiro Harada

32
23
開始ページ
235021
終了ページ
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1088/0264-9381/32/23/235021
出版者・発行元
Institute of Physics Publishing

The effect of the Gauss-Bonnet term on the existence and dynamical stability of thin-shell wormholes as negative tension branes is studied in the arbitrary-dimensional spherically, planar and hyperbolically symmetric spacetimes. We consider radial perturbations against the shell for the solutions that have the Z2 symmetry and admit the general relativistic limit. It is shown that the Gauss-Bonnet term shrinks the parameter region that admits static wormholes. The effect of the Gauss-Bonnet term on the stability depends on the spacetime symmetry. For planar symmetric wormholes, the Gauss-Bonnet term does not affect their stability. If the coupling constant is positive but small, the Gauss-Bonnet term tends to destabilize spherically symmetric wormholes, while it stabilizes hyperbolically symmetric wormholes. The Gauss-Bonnet term can destabilize hyperbolically symmetric wormholes as a non-perturbative effect, but spherically symmetric wormholes cannot be stable.

リンク情報
DOI
https://doi.org/10.1088/0264-9381/32/23/235021
URL
http://www.scopus.com/inward/record.url?eid=2-s2.0-84947967608&partnerID=MN8TOARS
ID情報
  • DOI : 10.1088/0264-9381/32/23/235021
  • ISSN : 1361-6382
  • ISSN : 0264-9381
  • ORCIDのPut Code : 25712414
  • SCOPUS ID : 84947967608

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