Black universes with trapped ghosts
K.A. Bronnikov1 and E.V. Donskoy2
(1) Center of Gravitation and Fundamental Metrology, VNIIMS, Ozyornaya St. 46, Moscow 119361, Russia
(2) Institute of Gravitation and Cosmology, PFUR, Miklukho-Maklaya St. 6, Moscow 117198, Russia
A black universe is a nonsingular black hole where, beyond the horizon, there is an expanding, asymptotically isotropic universe. Such models have been previously found as solutions of general relativity with a phantom scalar field as a source of gravity and, without phantoms, in a brane world of RS2 type. Here we construct examples of static, spherically symmetric black-universe solutions in general relativity with a minimally coupled scalar field f whose kinetic energy is negative in a restricted strong-field region of space-time and positive outside it. Thus in such configurations a "ghost" is trapped in a small part of space, which may in principle explain why no ghosts are observed under usual conditions.
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- I. Dymnikova, Gen. Rel. Grav. 24, 235 (1992).
- I. Dymnikova and E. Galaktionov, Phys. Lett. B 645, 358 (2007).
- P. Dzierzak, J. Jezierski, P. Malkiewicz, and W. Piechocki, arXiv: 0810.3172.
- D.J. Mulryse, R. Tavakol, J.E. Lidsey and G.F.R. Ellis, Phys. Rev. D 71, 123512 (2005); S. Mukherejee, B.C. Paul, S.D. Maharaj and A. Beesham, gr-qc/0505103.
- K.A. Bronnikov and J.C. Fabris, Phys. Rev.L 96 251101 (2006).
- K.A. Bronnikov, V.N. Melnikov and H. Dehnen, Gen. Rel. Grav. 39 973 (2007).
- K.A. Bronnikov and E.V. Donskoy, Grav. & Cosmol. 16 42 (2010).
- L. Randall and R. Sundrum, Phys. Rev.L 83 4690 (1999), hep-ph/9906064.
- T. Shiromizu, K. Maeda and M. Sasaki, Phys. Rev. D 62 024012 (2000).
- K.A. Bronnikov and S.-W. Kim, Phys. Rev. D 67 064027 (2003), gr-qc/0212112.
- K.A. Bronnikov and S.V. Sushkov, Class. Quant. Grav. 27 095022 (2010).
- H. Kroger, G. Melkonian and S.G. Rubin, Gen. Rel. Grav. 36 1649 (2004); astro-ph/0310182.
- M.S. Morris and K.S. Thorne, Am. J. Phys. 56, 395 (1988).
- K.A. Bronnikov and S.G. Rubin, Lectures on Gravitation and Cosmology (MIFI press, Moscow, 2008, in Russian).
- K.A. Bronnikov, Phys. Rev. D 64 064013 (2001), gr-qc/0104092; K.A. Bronnikov, J. Math. Phys. 43 6096 (2002), gr-qc/0204001; K.A. Bronnikov and G.N. Shikin, Grav. & Cosmol. 8 107 (2002).
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