96 citations · 722 across the 24 of their papers we have counts for
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Matter-coupled supersymmetric Kerr-Newman-AdS black holes
Kiril Hristov, Stefanos Katmadas, Chiara Toldo
We present new analytic rotating AdS black holes, found as solutions of 4d gauged supergravity coupled to abelian vector multiplets with a symmetric scalar mani…
The holographic dual to supergravity instantons in
S. Katmadas, D. Ruggeri, M. Trigiante +1
We investigate the holographic dual to supergravity instanton solutions in , which are described entirely in terms of geodesics on the AdS moduli…
Rotating attractors and BPS black holes in
Kiril Hristov, Stefanos Katmadas, Chiara Toldo
We analyze stationary BPS black hole solutions to 4d abelian gauged supergravity. Using an appropriate near horizon ansatz, we construct rotating attractors with ma…
Gauged supergravities from M-theory reductions
Stefanos Katmadas, Alessandro Tomasiello
In supergravity compactifications, there is in general no clear prescription on how to select a finite-dimensional family of metrics on the internal space, and a family of forms on…
Two Kissing Bolts
Guillaume Bossard, Stefanos Katmadas, David Turton
The study of non-supersymmetric black hole microstates offers the potential to resolve the black hole information paradox. A system of equations was recently obtained that enables…
Bolting Multicenter Solutions
Iosif Bena, Guillaume Bossard, Stefanos Katmadas +1
We introduce a solvable system of equations that describes non-extremal multicenter solutions to six-dimensional ungauged supergravity coupled to tensor multiplets. The system invo…
Higher derivative corrections to BPS black hole attractors in 4d gauged supergravity
Kiril Hristov, Stefanos Katmadas, Ivano Lodato
We analyze BPS black hole attractors in 4d gauged supergravity in the presence of higher derivative supersymmetric terms, including a Weyl-squared-type action, and determine the re…
The off-shell c-map
Nabamita Banerjee, Bernard de Wit, Stefanos Katmadas
The off-shell version of the c-map is presented, based on a systematic off-shell reduction from four to three space-time dimensions for supergravity theories with eight supercharge…
Non-BPS multi-bubble microstate geometries
Iosif Bena, Guillaume Bossard, Stefanos Katmadas +1
We construct the first smooth horizonless supergravity solutions that have two topologically-nontrivial three-cycles supported by flux, and that have the same mass and charges as a…
AdS4 black holes from M-theory
Stefanos Katmadas, Alessandro Tomasiello
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 directi…
Wilson lines for AdS_5 black strings
Kiril Hristov, Stefanos Katmadas
We describe a simple method of extending AdS_5 black string solutions of 5d gauged supergravity in a supersymmetric way by addition of Wilson lines along a circular direction in sp…
Floating JMaRT
Guillaume Bossard, Stefanos Katmadas
We define a new partially solvable system of equations that parametrises solutions to six-dimensional N=(1,0) ungauged supergravity coupled to tensor multiplets. We obtain this sys…
A bubbling bolt
Guillaume Bossard, Stefanos Katmadas
We present a new solvable system, solving the equations of five-dimensional ungauged N=1 supergravity coupled to vector multiplets, that allows for non-extremal solutions and reduc…
Static BPS black holes in U(1) gauged supergravity
Stefanos Katmadas
We consider the flow equations for -BPS asymptotically AdS static black holes in Fayet-Iliopoulos gauged supergravity, using very special geometry identities to obtain a s…
N=2 higher-derivative couplings from strings
Stefanos Katmadas, Ruben Minasian
We consider the Calabi-Yau reduction of the Type IIA eight derivative one-loop stringy corrections focusing on the couplings of the four dimensional gravity multiplet with vector m…
non-BPS walls of marginal stability
Guillaume Bossard, Stefanos Katmadas
We explore the properties of non-BPS multi-centre extremal black holes in ungauged N=2 supergravity coupled to n_v vector multiplets, as described by solutions to the composite non…
Duality covariant multi-centre black hole systems
Guillaume Bossard, Stefanos Katmadas
We present a manifestly duality covariant formulation of the composite non-BPS and almost-BPS systems of multi-centre black hole solutions in four dimensions. The method of nilpote…
Ungauging black holes and hidden supercharges
Kiril Hristov, Stefanos Katmadas, Valentina Pozzoli
We embed the general solution for non-BPS extremal asymptotically flat static and under-rotating black holes in abelian gauged D=4 N=2 supergravity, in the limit where the scalar p…
Duality covariant non-BPS first order systems
Guillaume Bossard, Stefanos Katmadas
We study extremal black hole solutions to four dimensional N=2 supergravity based on a cubic symmetric scalar manifold. Using the coset construction available for these models, we…
The off-shell 4D/5D connection
Nabamita Banerjee, Bernard de Wit, Stefanos Katmadas
A systematic off-shell reduction scheme from five to four space-time dimensions is presented for supergravity theories with eight supercharges. It is applicable to theories with hi…
First-order flows and stabilisation equations for non-BPS extremal black holes
Pietro Galli, Kevin Goldstein, Stefanos Katmadas +1
We derive a generalised form of flow equations for extremal static and rotating non-BPS black holes in four-dimensional ungauged N = 2 supergravity coupled to vector multiplets. Fo…
New supersymmetric higher-derivative couplings: Full N=2 superspace does not count!
Bernard de Wit, Stefanos Katmadas, Maaike van Zalk
An extended class of N=2 locally supersymmetric invariants with higher-derivative couplings based on full superspace integrals, is constructed. These invariants may depend on unres…
Near-horizon analysis of D=5 BPS black holes and rings
Bernard de Wit, Stefanos Katmadas
A comprehensive analysis is presented based exclusively on near-horizon data to determine the attractor equations and the entropy of BPS black holes and rings in five space-time di…
Almost BPS black holes
Kevin Goldstein, Stefanos Katmadas
We study non-BPS black hole solutions to ungauged supergravity with 8 supercharges coupled to vector multiplets in four and five dimensions. We identify a large class of five dimen…