Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
2007-12-10
Mod.Phys.Lett.A22:3047-3055,2007
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
LATEX, 9 pages
Scientific paper
10.1142/S0217732307026126
Using $N=1+1$ supersymmetric extension of the three-dimensional gravity with torsion, we show that a generic black hole has no exact supersymmetries, the extremal black hole has only one, while the zero-energy black hole has two. Combining these results with the asymptotic supersymmetry algebra, we are naturally led to interpret the zero-energy black hole as the ground state of the Ramond sector, and analogously, the anti-de Sitter solution as the ground state of the Neveau-Schwartz sector.
Blagojević Milutin
Cvetković Branislav
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