Cosmon Lumps and Horizonless Black Holes

Details Cosmon Lumps and Horizonless Black Holes Cosmon Lumps and Horizonless Black Holes

2008-02-29

arxiv.org/abs/0802.4399v1

Phys.Lett.B663:21-25,2008

Astronomy and Astrophysics

Astrophysics

6 pages, 5 figures

Scientific paper

10.1016/j.physletb.2008.03.051

We investigate non-linear, spherically symmetric solutions to the coupled system of a quintessence field and Einstein gravity. In the presence of a scalar potential, we find regular solutions that to an outside observer very closely resemble Schwarzschild black holes. However, these cosmon lumps have neither a horizon nor a central singularity. A stability analysis reveals that our static solutions are dynamically unstable. It remains an open question whether analogous stable solutions exist.

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