60 citations · 154 across the 11 of their papers we have counts for
11 papers
Killing tensors of generalized Lense-Thirring space-time
Saeedeh Sadeghian
We investigate the Hamilton-Jacobi equation of a probe particle moving on d-dimensional generalized Lense-Thirring metric. This space-time is different from the slowly rotating Mye…
Separability of Klein-Gordon Equation on Near Horizon Extremal Myers-Perry Black Hole
Hovhannes Demirchian, Saeedeh Sadeghian
We investigate the separability of Klein-Gordon equation on near horizon of d-dimensional rotating Myers-Perry black hole in two limits : 1) generic extremal case and 2) extremal v…
Resurgence in the O(4) sigma model
Michael C. Abbott, Zoltán Bajnok, János Balog +2
We analyze the free energy of the integrable two dimensional O(4) sigma model in a magnetic field. We use Volin's method to extract high number (2000) of perturbative coefficients…
T-Witts from the horizon
H. Adami, D. Grumiller, S. Sadeghian +2
Expanding around null hypersurfaces, such as generic Kerr black hole horizons, using co-rotating Kruskal-Israel-like coordinates we study the associated surface charges, their symm…
Hidden symmetries of near-horizon extremal Kerr-AdS-NUT geometries
Saeedeh Sadeghian
We study hidden symmetries, the symmetries associated with the Killing tensors, of the near horizon geometry of odd-dimensional Kerr-AdS-NUT black hole in two limits: generic extre…
On integrability of geodesics in near-horizon extremal geometries: Case of Myers-Perry black holes in arbitrary dimensions
Hovhannes Demirchian, Armen Nersessian, Saeedeh Sadeghian +1
We investigate dynamics of probe particles moving in the near-horizon limit of extremal Myers-Perry black holes in arbitrary dimensions. Employing ellipsoidal coordinates we show t…
AdS to dS transition in the near horizon of asymptotically de Sitter solutions
S. Sadeghian, M. H. Vahidinia
We consider two solutions of Einstein- theory which admit the extremal vanishing horizon (EVH) limit, odd-dimensional multi-spinning Kerr black hole (in the presence of cosmolog…
Three Theorems on Near Horizon Extremal Vanishing Horizon Geometries
S. Sadeghian, M. M. Sheikh-Jabbari, M. H. Vahidinia +1
EVH black holes are Extremal black holes with Vanishing Horizon area, where vanishing of horizon area is a result of having a vanishing one-cycle on the horizon. We prove three the…
Black Rings in U(1)^3 Supergravity and their dual 2d CFT
S. Sadeghian, H. Yavartanoo
We study the near horizon geometry of black ring solutions in five-dimensional U(1)^3 supergravity with three electric dipole charges and one angular momentum. We consider the extr…
Near Horizon Structure of Extremal Vanishing Horizon Black Holes
S. Sadeghian, M. M. Sheikh-Jabbari, M. H. Vahidinia +1
We study the near horizon structure of Extremal Vanishing Horizon (EVH) black holes, extremal black holes with vanishing horizon area with a vanishing one-cycle on the horizon. We…
On Classification of Geometries with SO(2,2) Symmetry
S. Sadeghian, M. M. Sheikh-Jabbari, H. Yavartanoo
Motivated by the Extremal Vanishing Horizon (EVH) black holes, their near horizon geometry and the EVH/CFT proposal, we construct and classify solutions with (local) SO(2,2) symmet…