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Journal Article

#### Strong cosmic censorship for surface-symmetric cosmological spacetimes with collisionless matter

##### Fulltext (public)

0701034.pdf

(Preprint), 787KB

##### Supplementary Material (public)

There is no public supplementary material available

##### Citation

Dafermos, M., & Rendall, A. D. (2016). Strong cosmic censorship for surface-symmetric
cosmological spacetimes with collisionless matter.* Communications on Pure and Applied Mathematics,*
*69*(5), 815-908. doi:10.1002/cpa.21628.

Cite as: http://hdl.handle.net/11858/00-001M-0000-0013-5FB0-C

##### Abstract

This paper addresses strong cosmic censorship for spacetimes with self-gravitating collisionless matter, evolving from surface-symmetric compact initial data. The global dynamics exhibit qualitatively different features according to the sign of the curvature $k$ of the symmetric surfaces and the cosmological constant $\Lambda$. With a suitable formulation, the question of strong cosmic censorship is settled in the affirmative if $\Lambda=0$ or $k\le0$, $\Lambda>0$. In the case $\Lambda>0$, $k=1$, we give a detailed geometric characterization of possible "boundary" components of spacetime; the remaining obstruction to showing strong cosmic censorship in this case has to do with the possible formation of extremal Schwarzschild-de Sitter-type black holes. In the special case that the initial symmetric surfaces are all expanding, strong cosmic censorship is shown in the past for all $k,\Lambda$. Finally, our results also lead to a geometric characterization of the future boundary of black hole interiors for the collapse of asymptotically flat data: in particular, in the case of small perturbations of Schwarzschild data, it is shown that these solutions do not exhibit Cauchy horizons emanating from $i^+$ with strictly positive limiting area radius.