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Physics 2010
Is BTZ a separate superselection sector of CTMG?DOI: 10.1016/j.physletb.2010.09.019 Abstract: We exhibit exact solutions of (positive) matter coupled to cosmological TMG; they necessarily evolve to conical singularity/negative mass, rather than physical black hole, BTZ. By providing evidence that the latter constitutes a separate, "superselection", sector not reachable from the physical one, they also provide justification for retaining TMG's original "wrong" G-sign to ensure excitation stability here as well.
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