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The macroscopic entropy and the attractor equations for BPS black holes in four-dimensional N=2 supergravity theories follow from a variational principle for a certain `entropy function'. We present this function in the presence of…

High Energy Physics - Theory · Physics 2009-11-11 G. L. Cardoso , B. de Wit , J. Käppeli , T. Mohaupt

For suitable charges of the constituents, the phase space of multi-centered BPS black holes in N=2 four-dimensional supergravity famously exhibits scaling regions where the distances between the centers can be made arbitrarily small, so…

High Energy Physics - Theory · Physics 2022-09-28 Pierre Descombes , Boris Pioline

At the horizon, a static extremal black hole solution in N=2 supergravity in four dimensions is determined by a set of so-called attractor equations which, in the absence of higher-curvature interactions, can be derived as extremization…

High Energy Physics - Theory · Physics 2009-10-07 Gabriel Lopes Cardoso , Viviane Grass , Dieter Lust , Jan Perz

We investigate the spectrum of type IIA BPS D-branes on the quintic from a four dimensional supergravity perspective and the associated split attractor flow picture. We obtain some very concrete properties of the (quantum corrected)…

High Energy Physics - Theory · Physics 2010-02-03 Frederik Denef , Brian Greene , Mark Raugas

We derive explicitly the superpotential W for the non-BPS branch of N=2 extremal black holes in terms of duality invariants of special geometry. Although this is done for a one-modulus case (the t^3 model), the example gives $Z \neq 0$…

High Energy Physics - Theory · Physics 2009-10-29 Anna Ceresole , Gianguido Dall'Agata , Sergio Ferrara , Armen Yeranyan

[abridged version] We study extremal solutions arising in M-theory compactifications on Calabi-Yau threefolds, focussing on non-BPS attractors for their importance in relation to the Weak Gravity Conjecture. In the low-energy/field theory…

High Energy Physics - Theory · Physics 2022-02-15 Alessio Marrani , Anshul Mishra , Prasanta K. Tripathy

We consider N=2 supergravity in four dimensions, coupled to an arbitrary number of vector- and hypermultiplets, where abelian isometries of the quaternionic hyperscalar target manifold are gauged. Using a static and spherically or…

High Energy Physics - Theory · Physics 2016-09-14 Dietmar Klemm , Nicolò Petri , Marco Rabbiosi

We review recent results in the study of attractor horizon geometries (with non-vanishing Bekenstein-Hawking entropy) of dyonic extremal d=4 black holes in supergravity. We focus on N=2, d=4 ungauged supergravity coupled to a number n_{V}…

High Energy Physics - Theory · Physics 2008-11-26 S. Bellucci , S. Ferrara , A. Marrani

Within the extremal black hole attractors arising in ungauged $\mathcal{N}\geqslant 2$-extended Maxwell Einstein supergravity theories in $3+1$ space-time dimensions, we provide an overview of the stratification of the electric-magnetic…

High Energy Physics - Theory · Physics 2023-12-21 Alessio Marrani

The entropy and the attractor equations for static extremal black hole solutions follow from a variational principle based on an entropy function. In the general case such an entropy function can be derived from the reduced action evaluated…

High Energy Physics - Theory · Physics 2010-10-27 G. L. Cardoso , B. de Wit , S. Mahapatra

We consider a deformation of the well-known stu model of $N=2$, $D=4$ supergravity, characterized by a non-homogeneous special K\"{a}hler manifold, and by the smallest electric-magnetic duality Lie algebra consistent with its upliftability…

High Energy Physics - Theory · Physics 2015-07-21 Dietmar Klemm , Alessio Marrani , Nicolò Petri , Camilla Santoli

In four dimensional N=2 supergravity theories, BPS bound states near marginal stability are described by configurations of widely separated constituents with nearly parallel central charges. When the vacuum moduli can be dialed…

High Energy Physics - Theory · Physics 2015-05-19 Evgeny Andriyash , Frederik Denef , Daniel L. Jafferis , Gregory W. Moore

We elaborate further on the static supersymmetric AdS_4 black holes found in arXiv:0911.4926, investigating thoroughly the BPS constraints for spherical symmetry in N = 2 gauged supergravity in the presence of Fayet-Iliopoulos terms. We…

High Energy Physics - Theory · Physics 2015-05-20 Kiril Hristov , Stefan Vandoren

We analyze stationary BPS black hole solutions to 4d $\mathcal{N}=2$ abelian gauged supergravity. Using an appropriate near horizon ansatz, we construct rotating attractors with magnetic flux realizing a topological twist along the horizon…

High Energy Physics - Theory · Physics 2019-10-09 Kiril Hristov , Stefanos Katmadas , Chiara Toldo

We consider the BPS conditions of eleven dimensional supergravity, restricted to an appropriate ansatz for black holes in four non-compact directions. Assuming the internal directions to be described by a circle fibration over a K\"ahler…

High Energy Physics - Theory · Physics 2016-01-27 Stefanos Katmadas , Alessandro Tomasiello

We derive extremal black hole solutions for a variety of four dimensional models which, after Kaluza-Klein reduction, admit a description in terms of 3D gravity coupled to a sigma model with symmetric target space. The solutions are in…

High Energy Physics - Theory · Physics 2009-06-10 Davide Gaiotto , Wei Li , Megha Padi

The spectrum of quarter BPS dyons in N=4 supersymmetric string theories can change as the asymptotic moduli cross walls of marginal stability on which the dyon can break apart into a pair of half BPS states. In this paper we classify these…

High Energy Physics - Theory · Physics 2009-11-13 Ashoke Sen

We present a detailed study of the analytic structure, BPS spectra and superconformal points of the $ N=2 $ susy $ SU(2) $ gauge theories with $ N_f=1,2,3 $ massive quark hypermultiplets. We compute the curves of marginal stability with the…

High Energy Physics - Theory · Physics 2009-10-30 Adel Bilal , Frank Ferrari

We exploit some common features of black hole and domain wall solutions of (super)gravity theories coupled to scalar fields and construct a class of stable extremal black holes that are non-BPS, but still can be described by first-order…

High Energy Physics - Theory · Physics 2010-10-27 Anna Ceresole , Gianguido Dall'Agata

We derive the U-duality charge orbits, as well as the related moduli spaces, of "large" and "small" extremal black holes in non-maximal ungauged Maxwell-Einstein supergravities with symmetric scalar manifolds in d=5 space-time dimensions.…

High Energy Physics - Theory · Physics 2014-11-21 Bianca L. Cerchiai , Sergio Ferrara , Alessio Marrani , Bruno Zumino