Results 41 to 50 of about 2,141 (121)

AdS4 black holes from M-theory

, 2015
We consider the BPS conditions of eleven dimensional supergravity, restricted to an appropriate ansatz for black holes in four non-compact directions.
Katmadas, Stefanos, Tomasiello, Alessandro   +1 more
core   +1 more source

Some applications of canonical metrics to Landau–Ginzburg models

Journal of the London Mathematical Society, Volume 111, Issue 4, April 2025.
Abstract It is known that a given smooth del Pezzo surface or Fano threefold X$X$ admits a choice of log Calabi–Yau compactified mirror toric Landau–Ginzburg model (with respect to certain fixed Kähler classes and Gorenstein toric degenerations).
Jacopo Stoppa
wiley   +1 more source

A decomposition theorem for $\mathbb{Q}$-Fano Kähler–Einstein varieties

Comptes Rendus. Mathématique
Let $X$ be a $\mathbb{Q}$-Fano variety admitting a Kähler–Einstein metric. We prove that up to a finite quasi-étale cover, $X$ splits isometrically as a product of Kähler–Einstein $\mathbb{Q}$-Fano varieties whose tangent sheaf is stable with respect to ...
Druel, Stéphane, Guenancia, Henri, Păun, Mihai   +2 more
doaj   +1 more source

Yang-Mills instantons in Kaehler spaces with one holomorphic isometry

, 2017
We consider self-dual Yang-Mills instantons in 4-dimensional Kaehler spaces with one holomorphic isometry and show that they satisfy a generalization of the Bogomol'nyi equation for magnetic monopoles on certain 3-dimensional metrics.
Chimento, Samuele, Ortin, Tomas, Ruiperez, Alejandro   +2 more
core   +2 more sources

Mabuchi Kähler solitons versus extremal Kähler metrics and beyond

Bulletin of the London Mathematical Society, Volume 57, Issue 3, Page 692-710, March 2025.
Abstract Using the Yau–Tian–Donaldson type correspondence for v$v$‐solitons established by Han–Li, we show that a smooth complex n$n$‐dimensional Fano variety admits a Mabuchi soliton provided it admits an extremal Kähler metric whose scalar curvature is strictly less than 2(n+1)$2(n+1)$.
Vestislav Apostolov, Abdellah Lahdili, Yasufumi Nitta   +2 more
wiley   +1 more source

Off-Diagonal Deformations of Kerr Metrics and Black Ellipsoids in Heterotic Supergravity

, 2016
Geometric methods for constructing exact solutions of motion equations with first order $\alpha ^{\prime}$ corrections to the heterotic supergravity action implying a non-trivial Yang-Mills sector and six dimensional, 6-d, almost-K\"ahler internal spaces
A Kehagias, A Lukas, AS Haupt, B Wecht, C Hull, D Harland, D Kramer, DJ Gross, DJ Gross, E Bergshoeff, E Elizalde, G Gabadadze, GT Horowitz, H Samtleben, J Gray, K Becker, Klee Irwin, M Graña, M Heusler, M Klaupt, MB Green, MR Douglas, NE Mavromatos, P Stavrinos, R Blumenhagen, R Geroch, R Geroch, S Basilakos, S Basilakos, S Ferrara, S Hassan, S Ivanov, S Koyama, S Nojiri, S Nojiri, S Vacaru, S Vacaru, S Vacaru, S Vacaru, S Vacaru, S Vacaru, S Vacaru, S Vacaru, S Vacaru, S Vacaru, S Vacaru, S Vacaru, S Vacaru, S Vacaru, S Vacaru, S Vacaru, S Vacaru, S Vacaru, S Vacaru, S Vacaru, S Vacaru, S Vacaru, S Vacaru, S Vacaru, S Vacaru, Sergiu I. Vacaru, T Gheorghiu, T Gheorghiu, T Nieuwenhuizen   +63 more
core   +1 more source

Notes on Characterizations of 2d Rational SCFTs: Algebraicity, Mirror Symmetry, and Complex Multiplication

Fortschritte der Physik, Volume 73, Issue 1-2, February 2025.
Abstract S. Gukov and C. Vafa proposed a characterization of rational N=(1,1)$N=(1,1)$ superconformal field theories (SCFTs) in 1+1$1+1$ dimensions with Ricci‐flat Kähler target spaces in terms of the Hodge structure of the target space, extending an earlier observation by G. Moore.
Abhiram Kidambi, Masaki Okada, Taizan Watari   +2 more
wiley   +1 more source

Pair of Associated η-Ricci–Bourguignon Almost Solitons with Vertical Potential on Sasaki-like Almost Contact Complex Riemannian Manifolds

Mathematics
The manifolds studied are almost contact complex Riemannian manifolds, known also as almost contact B-metric manifolds. They are equipped with a pair of pseudo-Riemannian metrics that are mutually associated to each other using an almost contact ...
Mancho Manev
doaj   +1 more source

Convergence of the weak K\"ahler-Ricci Flow on manifolds of general type

, 2019
We study the K\"ahler-Ricci flow on compact K\"ahler manifolds whose canonical bundle is big. We show that the normalized K\"ahler-Ricci flow has long time existence in the viscosity sense, is continuous in a Zariski open set, and converges to the unique
Tô, Tat Dat
core   +1 more source

Curvature of quaternionic skew‐Hermitian manifolds and bundle constructions

Mathematische Nachrichten, Volume 298, Issue 1, Page 87-112, January 2025.
Abstract This paper is devoted to a description of the second‐order differential geometry of torsion‐free almost quaternionic skew‐Hermitian manifolds, that is, of quaternionic skew‐Hermitian manifolds (M,Q,ω)$(M, Q, \omega)$. We provide a curvature characterization of such integrable geometric structures, based on the holonomy theory of symplectic ...
Ioannis Chrysikos, Vicente Cortés, Jan Gregorovič   +2 more
wiley   +1 more source