15 citations · 29 across the 7 of their papers we have counts for
7 papers
The warp factor of supersymmetric near-horizon geometries: single-point rigidity, the perfect square, and global constraints
Usman Kayani
On a compact connected section of a supersymmetric -horizon the Killing-spinor bilinears give a pointwise identity relating the warp factor , the rotation one-form…
A second rotational Killing field on gauged vector-multiplet horizons, and a no-go for varying-moduli black rings
Usman Kayani
We study supersymmetric near-horizon geometries of gauged supergravity coupled to vector multiplets, on the branch where the canonical rotational Killing vector of…
Supersymmetric near-horizon geometries in D = 6 supergravity: Lichnerowicz theorems, index theory and symmetry enhancement
U. Kayani
We analyse supersymmetric near-horizon geometries of extremal black holes in , supergravity with one tensor multiplet and -symmetry gauging. Assuming smoot…
Dynamical supersymmetry enhancement of black hole horizons
Usman Kayani
This thesis is devoted to the study of dynamical symmetry enhancement of black hole horizons in string theory. In particular, we consider supersymmetric horizons in the low energy…
Symmetry enhancement of extremal horizons in D=5 supergravity
U. Kayani
We consider the near-horizon geometry of supersymmetric extremal black holes in un-gauaged and gauged 5-dimensional supergravity, coupled to abelian vector multiplets. By analyzing…
Dynamical symmetry enhancement near massive IIA horizons
U. Gran, J. Gutowski, U. Kayani +1
We prove that Killing horizons in massive IIA supergravity preserve an even number of supersymmetries, and that their symmetry algebra contains an subalgebra,…
Dynamical symmetry enhancement near IIA horizons
U. Gran, J. Gutowski, U. Kayani +1
We show that smooth type IIA Killing horizons with compact spatial sections preserve an even number of supersymmetries, and that the symmetry algebra of horizons with non-trivial f…