Rotating black hole solution in a generalized topological 3D gravity with torsion

Black hole entropy from the boundary conformal structure in 3D gravity with torsion

“…In particular, it was shown that: (a) the Mielke-Baekler model in Minkowskian spacetime possesses the black hole solution, and (b) for suitable boundary conditions, its asymptotic symmetry is described by two independent Virasoro algebras with different central charges [13,16,17,19]. One is now tempted to use this Minkowskian asymptotic structure and calculate the black hole entropy in the manner of Strominger [10].…”

S-Duality in Topological Supergravity

“…The equation (5) is the known topological Lagrangian of the Mielke-Baekler (MB) mix-model [28,31]. Since the translational term C T is covariant, it appears that the MB model is semi-topological, with interesting consequence on the degrees of propagating modes, cf.…”

“…the Appendices of Ref. [31]. Table 1 contains a summary of these basic variables and their components in various dimensions.…”

Covariant description of the black hole entropy in 3D gravity

“…The related field equations have one particularly interesting solution-the black hole with torsion [15,16,17,18,19], which generalizes the BTZ black hole [4]. It is well known that quantum nature of gravity is reflected in thermodynamic properties of black holes [24,25,26,27,28].…”

“…In this approach, both the curvature and the torsion are used to characterize the gravitational dynamics. The application of these ideas to 3D gravity started in the early 1990s, leading to a deeper understanding of the dynamical role of torsion [13,14,15,16,17,18,19,20,21,22,23].…”