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We first review the calculations for the modular flow and the vector flow of $\text{CFT}_2$, Warped CFTs and BMSFTs, and then we present the vector flow and modular flows in celestial field theory and Klein CFTs. We also discuss the search…

High Energy Physics - Theory · Physics 2026-05-19 Mahdis Ghodrati

Non-extremal black holes in $\mathcal{N}=2$ supergravity have two horizons, the geometric mean of whose areas recovers the horizon area of the extremal black hole obtained from taking a smooth zero temperature limit. In prior work…

High Energy Physics - Theory · Physics 2016-05-04 Kevin Goldstein , Vishnu Jejjala , Suresh Nampuri

In this paper we generalize the results of [1] to 5-dimensional Anti-de Sitter gravity theories with neutral scalars non-minimally coupled to gauge fields. Due to the attractor mechanism, the near horizon geometry of extremal black holes is…

High Energy Physics - Theory · Physics 2015-05-13 Dumitru Astefanesei , Yogesh K. Srivastava

Kerr/CFT correspondence has been recently applied to various types of 5D extremal rotating black holes. A common feature of all such examples is the existence of two chiral CFT duals corresponding to the U(1) symmetries of the near horizon…

High Energy Physics - Theory · Physics 2009-07-24 F. Loran , H. Soltanpanahi

We investigate the attractor mechanism for spherically symmetric extremal black holes in a theory of general $R^2$ gravity in 4-dimensions, coupled to gauge fields and moduli fields. For the general $R^2$ theory, we look for solutions which…

High Energy Physics - Theory · Physics 2009-11-11 B. Chandrasekhar , S. Parvizi , A. Tavanfar , H. Yavartanoo

The near horizon geometry of the rotating C-metric, describing accelerating Kerr-Newman black holes, is analysed. It is shown that, at extremality, even though not it is isomorphic to the extremal Kerr-Newman, it remains a warped and…

High Energy Physics - Theory · Physics 2016-07-26 Marco Astorino

We derive a general form of first-order flow equations for extremal and non-extremal, static, spherically symmetric black holes in theories with massless scalars and vectors coupled to gravity. By rewriting the action as a sum of squares a…

High Energy Physics - Theory · Physics 2009-06-08 Jan Perz , Paul Smyth , Thomas Van Riet , Bert Vercnocke

We analyze superselection sectors, non-invertible symmetries and selection rules for RG flows triggered via perturbations of a UV two-dimensional conformal field theory (CFT$_2$). To this end we describe a method whose input is the local…

High Energy Physics - Theory · Physics 2026-03-11 Valentin Benedetti , Paul Fendley , Javier M. Magan

Accreting black hole sources show variable outflows at different mass scales. For instance, in the case of galactic nuclei, our own galactic center Sgr A* exhibits flares and outbursts in the X-ray and infrared bands. Recent studies suggest…

High Energy Astrophysical Phenomena · Physics 2024-07-17 Bestin James , Agnieszka Janiuk , Vladimir Karas

We study the nearly AdS(2) geometry of nearly extremal black holes in N = 2 supergravity in four dimensions. In the strictly extreme limit the attractor mechanism for asymptotically flat black holes states that the horizon geometries of…

High Energy Physics - Theory · Physics 2019-05-01 Finn Larsen

The general solutions of the radial attractor flow equations for extremal black holes, both for non-BPS with non-vanishing central charge Z and for Z=0, are obtained for the so-called stu model, the minimal rank-3 N=2 symmetric supergravity…

High Energy Physics - Theory · Physics 2015-05-13 S. Bellucci , S. Ferrara , A. Marrani , A. Yeranyan

We point out that the entropy of (near) extremal black holes can be interpreted as the entanglement entropy of dual conformal quantum mechanics via AdS2/CFT1. As an explicit example, we study near extremal BTZ black holes and derive this…

High Energy Physics - Theory · Physics 2008-11-26 Tatsuo Azeyanagi , Tatsuma Nishioka , Tadashi Takayanagi

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 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

We construct interpolating solutions describing single-center static extremal non-supersymmetric black holes in four-dimensional N=2 supergravity theories with cubic prepotentials. To this end, we derive and solve first-order flow equations…

High Energy Physics - Theory · Physics 2009-11-18 Gabriel Lopes Cardoso , Anna Ceresole , Gianguido Dall'Agata , Johannes M. Oberreuter , Jan Perz

We prove that, in a general higher derivative theory of gravity coupled to abelian gauge fields and neutral scalar fields, the entropy and the near horizon background of a rotating extremal black hole is obtained by extremizing an entropy…

High Energy Physics - Theory · Physics 2010-04-06 Dumitru Astefanesei , Kevin Goldstein , Rudra P. Jena , Ashoke Sen , Sandip P. Trivedi

In this paper we analyse non-supersymmetric single centred extremal black hole solutions in N=2 supergravity theory coupled to $n$ vector multiplets with purely cubic pre-potential in four dimensions. We consider the algebraic attractor…

High Energy Physics - Theory · Physics 2017-05-03 Prasanta K. Tripathy

We classify the stability region, marginal stability walls (MS) and split attractor flows for two-center extremal black holes in four-dimensional N=2 supergravity minimally coupled to n vector multiplets. It is found that two-center…

High Energy Physics - Theory · Physics 2011-02-21 Sergio Ferrara , Alessio Marrani , Emanuele Orazi

We discuss some of the basic features of extremal black holes in four-dimensional extended supergravities. Firstly, all regular solutions display an attractor behavior for the scalar field evolution towards the black hole horizon. Secondly,…

High Energy Physics - Theory · Physics 2017-08-23 Anna Ceresole , Sergio Ferrara

In this note we give multiple examples of the recently proposed New Attractors describing supersymmetric flux vacua and non-supersymmetric extremal black holes in IIB string theory. Examples of non-supersymmetric extremal black hole…

High Energy Physics - Theory · Physics 2009-11-11 Alexander Giryavets