# Compact (A)dS boson stars and shells

@article{Hartmann2013CompactB,
title={Compact (A)dS boson stars and shells},
author={B. Hartmann and B. Kleihaus and J. Kunz and Isabell Schaffer},
journal={Physical Review D},
year={2013},
volume={88},
pages={124033}
}
We present compact Q-balls in an (Anti-)de Sitter background in D dimensions, obtained with a V-shaped potential of the scalar field. Beyond critical values of the cosmological constant compact Q-shells arise. By including the gravitational back-reaction, we obtain boson stars and boson shells with (Anti-)de Sitter asymptotics. We analyze the physical properties of these solutions and determine their domain of existence. In four dimensions we address some astrophysical aspects.
17 Citations

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#### References

SHOWING 1-10 OF 104 REFERENCES
Boson stars with negative cosmological constant
• Physics
• 2003
Abstract We consider boson star solutions in a D-dimensional, asymptotically anti-de Sitter spacetime and investigate the influence of the cosmological term on their properties. We find that for D>3Expand
Compact boson stars
• Physics
• 2012
Abstract We consider compact boson stars that arise for a V-shaped scalar field potential. They represent a one parameter family of solutions of the scaled Einstein–signum–Gordon equations. WeExpand
Rotating boson stars and Q-balls
• Physics
• 2005
We consider axially symmetric, rotating boson stars. Their flat-space limits represent spinning Q-balls. We discuss their properties and determine their domain of existence. Q-balls and boson starsExpand
Q-Stars in Anti de Sitter Spacetime
We study q-stars with various symmetries in anti de Sitter spacetime in 3+1 dimensions. Comparing with the case of flat spacetime, we find that the value of the field at the center of the soliton isExpand
Rotating boson stars and Q-balls. II. Negative parity and ergoregions
• Physics
• 2008
We construct axially symmetric, rotating boson stars with positive and negative parity. Their flat space limits represent spinning Q-balls. Q-balls and boson stars exist only in a limited frequencyExpand
Supersymmetric Q-balls and boson stars in (d + 1) dimensions
• Physics
• 2013
We construct supersymmetric Q-balls and boson stars in (d + 1) dimensions. These non-topological solitons are solutions of a scalar field model with global U(1) symmetry and a scalar field potentialExpand
Spinning scalar solitons in anti-de Sitter spacetime
• Physics
• 2012
Abstract We present spinning Q-balls and boson stars in four-dimensional anti-de Sitter spacetime. These are smooth, horizonless solutions for gravity coupled to a massive complex scalar field with aExpand
Charged boson stars and black holes
• Physics
• 2009
Abstract We consider boson stars and black holes in scalar electrodynamics with a V-shaped scalar potential. The boson stars come in two types, having either ball-like or shell-like charge density.Expand
Stable Phases of Boson Stars
• Physics
• 2012
We analyze the physical properties of boson stars, which possess counterparts in flat space-time, Q-balls. Applying a stability analysis via catastrophe theory, we show that the families of rotatingExpand
Boson shells harboring charged black holes
• Physics
• 2010
We consider boson shells in scalar electrodynamics coupled to Einstein gravity. The interior of the shells can be empty space, or harbor a black hole or a naked singularity. We analyze the propertiesExpand