Boson stars in AdS spacetime

By Alex Buchel, Steven L. Liebling, Luis Lehner. 2013

153 citations recorded by the source corpus.

We construct boson stars in global Anti de Sitter (AdS) space and study their stability. Linear perturbation results suggest that the ground state along with the first three excited state boson stars are stable. We evolve some of these solutions and study their nonlinear stability in light of recent work \cite{Bizon:2011gg} arguing that a weakly turbulent instability drives scalar perturbations of AdS to black hole formation. However evolutions suggest that boson stars are nonlinearly stable and immune to the instability for sufficiently small perturbation. Furthermore, these studies find other families of initial data which similarly avoid the instability for sufficiently weak parameters. Heuristically, we argue that initial data families with widely distributed mass-energy distort the spacetime sufficiently to oppose the coherent amplification favored by the instability. From the dual CFT perspective our findings suggest that there exist families of rather generic initial conditions in strongly coupled CFT (with large number of degrees of freedom) that do not thermalize in the infinite future.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/3f736911bdf72c9f99aecc18287593236156c00f

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Citations in the corpus

Holographic Quantum Matter (2016, unknown): “This is manifested holographically in fully nonlinear solutions of Einstein’s equations in asymptotically Anti-de Sitter spacetime which oscillate: for example, gravitational analogues of standing waves which are nonlinearly stabilized [115; 203].”
Numerical methods for finding stationary gravitational solutions (2015, background): “Some of these matters have been partially addressed, but is beyond the scope of this review, and we refer to the ongoing work in [272, 277, 303, 464, 483, 490–519].”
Dynamical boson stars (2012, background): “[78] studied boson stars in AdS, and found that indeed they are stable.”
Holographic thermalization, quasinormal modes and superradiance in Kerr-AdS (2013, background): “For instance, it has been shown recently that even arbitrarily small perturbations can trigger black hole formation in global AdS [18, 19], indicating that global AdS is nonlinearly unstable to a weak perturbative turbulent mechanism (note however the existence of “islands” of stability [20–22]).”