Compact (A)dS boson stars and shells

@article{Hartmann2013CompactB,
  title={Compact (A)dS boson stars and shells},
  author={Betti Hartmann and Burkhard Kleihaus and Jutta 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. 

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