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Related papers: Some examples of toric Sasaki-Einstein manifolds

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Using 3-Sasakian reduction techniques we obtain infinite families of new 3-Sasakian manifolds $\scriptstyle{{\cal M}(p_1,p_2,p_3)}$ and $\scriptstyle{{\cal M}(p_1,p_2,p_3,p_4)}$ in dimension 11 and 15 respectively. The metric cone on…

Differential Geometry · Mathematics 2007-05-23 Charles P. Boyer , Krzysztof Galicki , Paolo Piccinni

We study heterotic model building on 16 specific Calabi-Yau manifolds constructed as hypersurfaces in toric four-folds. These 16 manifolds are the only ones among the more than half a billion manifolds in the Kreuzer-Skarke list with a…

High Energy Physics - Theory · Physics 2015-06-17 Yang-Hui He , Seung-Joo Lee , Andre Lukas , Chuang Sun

In this paper we discuss when a quasi-conformally flat weakly Ricci symmetric manifold (of dimension greater than 3) becomes a manifold of hyper quasi-constant curvature, a quasi-Einstein manifold and a manifold of quasi-constant curvature.…

General Mathematics · Mathematics 2021-06-28 Payel Karmakar , Arindam Bhattacharyya

In this paper we study *-Conformal {\eta}-Ricci soliton on Sasakian manifolds. Here, we discuss some curvature properties on Sasakian manifold admitting *-Conformal {\eta}-Ricci soliton. We obtain some significant results on *-Conformal…

Differential Geometry · Mathematics 2021-05-18 Soumendu Roy , Santu Dey , Arindam Bhattacharyya , Shyamal Kumar Hui

We investigate curvature properties of 3-$(\alpha,\delta)$-Sasaki manifolds, a special class of almost 3-contact metric manifolds generalizing 3-Sasaki manifolds (corresponding to $\alpha = \delta = 1$) that admit a canonical metric…

Differential Geometry · Mathematics 2022-11-01 Ilka Agricola , Giulia Dileo , Leander Stecker

We find some curvature properties of 3-quasi-Sasakian manifolds which are similar to some well-known identities holding in the Sasakian case. As an application, we prove that any 3-quasi-Sasakian manifold of constant horizontal sectional…

Differential Geometry · Mathematics 2013-08-13 Beniamino Cappelletti Montano , Antonio De Nicola , Ivan Yudin

We discuss the Sasakian geometry of odd dimensional homotopy spheres. In particular, we give a completely new proof of the existence of metrics of positive Ricci curvature on exotic spheres that can be realized as the boundary of a…

Differential Geometry · Mathematics 2007-05-23 Charles P. Boyer , Krzysztof Galicki , Michael Nakamaye

We obtain new examples of non-symmetric Einstein solvmanifolds by combining two techniques. In \cite{T2}, H. Tamaru constructs new {\em attached} solvmanifolds, which are submanifolds of the solvmanifolds corresponding to noncompact…

Differential Geometry · Mathematics 2014-01-03 Megan M. Kerr

In the present paper we show that the complete list of special Killing forms on the 5-dimensional Sasaki-Einstein spaces $Y^{p,q}$ can be extracted using the symplectic potential and the classical Delzant construction. The results achieved…

Mathematical Physics · Physics 2015-08-11 Vladimir Slesar , Mihai Visinescu , Gabriel Eduard Vilcu

In this paper, we first confirm the Hamilton-Tian conjecture for the Sasaki-Ricci flow in a compact transverse Fano quasi-regular Sasakian $5$-manifold with klt foliation singularities. Secondly, we derive the compactness theorem of…

Differential Geometry · Mathematics 2026-05-21 Shu-Cheng Chang , Yingbo Han , Chien Lin , Chin-Tung Wu

We study 5-dimensional Riemannian manifolds that admit an almost contact metric structure. We classify these structures by their intrinsic torsion and review the literature in terms of this scheme. Moreover, we determine necessary and…

Differential Geometry · Mathematics 2012-11-13 Christof Puhle

We define K-stability of a polarized Sasakian manifold relative to a maximal torus of automorphisms. The existence of a Sasaki-extremal metric in the polarization is shown to imply that the polarization is K-semistable. Computing this…

Differential Geometry · Mathematics 2018-08-10 Charles P. Boyer , Craig van Coevering

The 2d (0,2) supersymmetric gauge theories corresponding to the classes of Y^{p,k}(CP^1 x CP^1) and Y^{p,k}(CP^2) manifolds are identified. The complex cones over these Sasaki-Einstein 7-manifolds are non-compact toric Calabi-Yau 4-folds.…

High Energy Physics - Theory · Physics 2023-03-14 Sebastian Franco , Dongwook Ghim , Rak-Kyeong Seong

The theory of ambient spaces is useful to define CR invariant objects, such as CR invariant powers of the sub-Laplacian, the $P$-prime operators, and $Q$-prime curvature. However in general, it is difficult to write down these objects in…

Differential Geometry · Mathematics 2018-08-08 Yuya Takeuchi

We study the normalized volume of toric singularities. As it turns out, there is a close relation to the notion of (non-symmetric) Mahler volume from convex geometry. This observation allows us to use standard tools from convex geometry,…

Algebraic Geometry · Mathematics 2021-11-03 Joaquín Moraga , Hendrik Süß

We investigate resolutions of heterotic orbifolds using toric geometry. Our starting point is provided by the recently constructed heterotic models on explicit blowup of C^n/Z_n singularities. We show that the values of the relevant…

High Energy Physics - Theory · Physics 2008-11-26 Stefan Groot Nibbelink , Tae-Won Ha , Michele Trapletti

Einstein like $(\varepsilon)$-para Sasakian manifolds are introduced. For an $(\varepsilon) $-para Sasakian manifold to be Einstein like, a necessary and sufficient condition in terms of its curvature tensor is obtained. The scalar…

Differential Geometry · Mathematics 2012-03-05 Sadik Keleş , Erol Kiliç , Mukut Mani Tripathi , Selcen Yüksel Perktaş

We find point-like and classical string solutions on the AdS_5 x X^5, where X^5 are the 5-dimensional Sasaki-Einstein manifolds Ypq and Lpqr. The number of acceptable solutions is limited drastically in order to satisfy the constraints on…

High Energy Physics - Theory · Physics 2009-11-09 Dimitrios Giataganas

The AdS/CFT correspondence between Sasaki-Einstein spaces and quiver gauge theories is studied from the perspective of massless BPS geodesics. The recently constructed toric Lpqr geometries are considered: we determine the dual…

High Energy Physics - Theory · Physics 2009-11-11 Sergio Benvenuti , Martin Kruczenski

We analyze the classic problem of existence of Einstein metrics in a given conformal structure for the class of conformal structures inducedf Nurowski's construction by (oriented) (2,3,5) distributions. We characterize in two ways such…

Differential Geometry · Mathematics 2017-01-20 Katja Sagerschnig , Travis Willse