3 research outputs found
Uniqueness of Rotating Charged Black Holes in Five-Dimensional Minimal Gauged Supergravity
We study a five-dimensional spacetime admitting, in the presence of torsion,
a non-degenerate conformal Killing-Yano 2-form which is closed with respect to
both the usual exterior differentiation and the exterior differentiation with
torsion. Furthermore, assuming that the torsion is closed and co-closed with
respect to the exterior differentiation with torsion, we prove that such a
spacetime is the only spacetime given by the Chong-Cvetic-Lu-Pope solution for
stationary, rotating charged black holes with two independent angular momenta
in five-dimensional minimal gauged supergravity.Comment: Dedicated to Nihat Berker on the occasion of his 60th birthday; 13
pages, REVTe
Stationary Spinning Strings and Symmetries of Classical Spacetimes
We explore the symmetries of classical stationary spacetimes in terms of the
dynamics of a spinning string described by a worldsheet supersymmetric action.
We show that for stationary configurations of the string, the action reduces to
that for a pseudo-classical spinning point particle in an effective space,
which is a conformally scaled quotient space of the original spacetime. As an
example, we consider the stationary spinning string in the Kerr-Newman
spacetime, whose motion is equivalent to that of the spinning point particle in
the three-dimensional effective space. We present the Killing tensor as well as
the spin-valued Killing vector of this space. However, the nongeneric
supersymmetry corresponding to the Killing-Yano tensor of the Kerr-Newman
spacetime is lost in the effective space.Comment: 14 pages, REVTe