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Št. zadetkov: 8
Generalized Couch-Torrence symmetry for rotating extremal black holes in maximal supergravity
Mirjam Cvetič, Christopher N. Pope, Aritra Saha
Izvirni znanstveni članek
Oznake: Kvantna logika;Fizika elementarnih delcev;Črne luknje;
he extremal Reissner-Nordstrom black hole admits a conformal inversion symmetry, in which the metric is mapped into itself under an inversion of the radial coordinate combined with a conformal rescaling. In the rotating generalization, Couch and Torrence showed that the Kerr- Newman metric no longer ...
Leto: 2020 Vir: Digitalna knjižnica Univerze v Mariboru (DKUM)
Conformal symmetries for extremal black holes with general asymptotic scalars in STU supergravity
Mirjam Cvetič, Christopher N. Pope, Aritra Saha
Izvirni znanstveni članek
Oznake: black holes;extended supersymmetry;supergravity models;string theory;
We present a construction of the most general BPS black holes of STU supergravity (N = 2 supersymmetric D = 4 supergravity coupled to three vector supermultiplets) with arbitrary asymptotic values of the scalar fields. These solutions are obtained by acting with a subset of the global symmetry gener ...
Leto: 2021 Vir: Digitalna knjižnica Univerze v Mariboru (DKUM)
Compactifications of deformed conifolds, branes and the geometry of qubits
Mirjam Cvetič, G. W. Gibbons, Christopher N. Pope
Izvirni znanstveni članek
Oznake: Conformal Field Models;String Theory;Models of Quantum Gravity;Differential Geometry;Algebraic Geometry;
We present three families of exact, cohomogeneity-one Einstein metrics in (2n + 2) dimensions, which are generalizations of the Stenzel construction of Ricci-flat metrics to those with a positive cosmological constant. The first family of solutions are Fubini-Study metrics on the complex projective ...
Leto: 2016 Vir: Digitalna knjižnica Univerze v Mariboru (DKUM)
Super-geometrodynamics
Mirjam Cvetič, G. W. Gibbons, Christopher N. Pope
Izvirni znanstveni članek
Oznake: black holes;supergravity;string theory;conformal field models;string duality;Kvantna logika;Fizika elementarnih delcev;
We present explicit solutions of the time-symmetric initial value constraints, expressed in terms of freely specifiable harmonic functions for examples of supergravity theories, which emerge as effective theories of compactified string theory. These results are a prerequisite for the study of the ti ...
Leto: 2015 Vir: Digitalna knjižnica Univerze v Mariboru (DKUM)
Gaussian null coordinates for rotating charged black holes and conserved charges
Mirjam Cvetič, Christopher N. Pope, Aritra Saha, Alejandro Satz
Izvirni znanstveni članek
Oznake: supergravitiy;flat spacetime;black hole;four-dimensional rotating;metrics;
Motivated by the study of conserved Aretakis charges for a scalar field on the horizon of an extremal black hole, we construct the metrics for certain classes of four-dimensional and five-dimensional extremal rotating black holes in Gaussian null coordinates. We obtain these as expansions in powers ...
Leto: 2020 Vir: Digitalna knjižnica Univerze v Mariboru (DKUM)
Long-range forces between nonidentical black holes with non-BPS extremal limits
Sera Cremonini, Mirjam Cvetič, Christopher N. Pope, Aritra Saha
Izvirni znanstveni članek
Oznake: astronomy;astrophysics;black holes;spacetime dimensions;
Motivated by recent studies of long-range forces between identical black holes, we extend these considerations by investigating the forces between two nonidentical black holes. We focus on classes of theories where charged black holes can have extremal limits that are not BPS. These theories, which ...
Leto: 2022 Vir: Digitalna knjižnica Univerze v Mariboru (DKUM)
Electrodynamics of black holes in STU supergravity
Mirjam Cvetič, G. W. Gibbons, Christopher N. Pope, Zain H. Saleem
Izvirni znanstveni članek
Oznake: black holes;supergravity;string theory;conformal field models;string duality;Kvantna logika;Fizika elementarnih delcev;
External magnetic fields can probe the composite structure of black holes in string theory. With this motivation we study magnetised four-charge black holes in the STU model, a consistent truncation of maximally supersymmetric supergravity with four types of electromagnetic fields. We employ solutio ...
Leto: 2014 Vir: Digitalna knjižnica Univerze v Mariboru (DKUM)
Rotating solutions in critical Lovelock gravities
Mirjam Cvetič, Xing-Hui Feng, Hong Lü, Christopher N. Pope
Izvirni znanstveni članek
Oznake: astrophysics;nuclear physics;
For appropriate choices of the coupling constants, the equations of motion of Lovelock gravities up to order n in the Riemann tensor can be factorized such that the theories admit a single (A)dS vacuum. In this paper we construct two classes of exact rotating metrics in such critical Lovelock gravit ...
Leto: 2017 Vir: Digitalna knjižnica Univerze v Mariboru (DKUM)
Št. zadetkov: 8
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