Zilhão, Miguel and Cardoso, Vitor and Gualtieri, Leonardo and Herdeiro, Carlos and Sperhake, Ulrich and Witek, Helvi (2012) Dynamics of black holes in de Sitter spacetimes. Physical Review D, 85 (10). Art. No. 104039. ISSN 0556-2821 http://resolver.caltech.edu/CaltechAUTHORS:20120618-121910147
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Nonlinear dynamics in cosmological backgrounds has the potential to teach us immensely about our Universe, and also to serve as prototype for nonlinear processes in generic curved spacetimes. Here we report on dynamical evolutions of black holes in asymptotically de Sitter spacetimes. We focus on the head-on collision of equal mass binaries and for the first time compare analytical and perturbative methods with full blown nonlinear simulations. Our results include an accurate determination of the merger/scatter transition (consequence of an expanding background) for small mass binaries and a test of the cosmic censorship conjecture, for large mass binaries. We observe that, even starting from small separations, black holes in large mass binaries eventually lose causal contact, in agreement with the conjecture.
|Additional Information:||© 2012 American Physical Society. Received 7 February 2012; published 23 May 2012. We would like to thank J. Thornburg for his help with AHFINDERDIRECT. M. Z. would like to thank the hospitality of the Perimeter Institute for Theoretical Physics, through the Visiting Graduate Fellows program, where this work was finished. The authors thank the Yukawa Institute for Theoretical Physics at Kyoto University, where parts of this work were completed during the workshop, no. YITP-T-11- 08, on ‘‘Recent Advances in Numerical and Analytical methods for Black Hole Dynamics’’. M. Z. and H.W. are funded by FCT through Grant Nos. SFRH/BD/43558/2008 and SFRH/BD/46061/2008. U. S. acknowledges support from the Ramón y Cajal Programme, under Grant No. FIS2011-30145-C03-03 of the Ministry of Education and Science of Spain and Grant No. AGAUR-2009-SGR- 935. This work was supported by the DyBHo-256667 ERC Starting Grant, the CBHEO-293412 FP7-PEOPLE-2011- CIG Grant, the NRHEP-295189 FP7-PEOPLE-2011- IRSES Grant, and by FCT—Portugal through Project Nos. PTDC/FIS/098025/2008, PTDC/FIS/098032/2008, PTDC/FIS/116625/2010, CERN/FP/116341/2010 and the Sherman Fairchild Foundation to Caltech. Computations were performed with the support of the NSF TeraGrid and XSEDE Grant Nos. PHY-090003, PRACE-2IP DECI-7 Project ‘‘Black hole dynamics in metric theories of gravity’’, RES Grant Nos. AECT-2012-1-0008, AECT-2011-3-0007, AECT-2011-2-0015 and AECT-2011-3-0006 through the Barcelona Supercomputing Center, CESGA under Grant Nos. ICTS-200 and ICTS-221, on the Blafis cluster at Aveiro University, the Milipeia in Coimbra and the Lage cluster at Centro de Física do Porto.|
|Classification Code:||PACS: 04.25.D-; 04.20.Dw; 04.70.-s; 98.80.Jk|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Aucoeur Ngo|
|Deposited On:||18 Jun 2012 23:12|
|Last Modified:||26 Dec 2012 15:20|
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