Cosmon lumps and horizonless black holes

Timm Krueger, Matthias Neubert, Christof Wetterich

Research output: Contribution to journalArticlepeer-review


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.
Original languageEnglish
Pages (from-to)21-25
JournalPhysics Letters B
Issue number1-2
Publication statusPublished - 1 May 2008


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