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Related papers: Coupled Sasaki-Ricci solitons

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In this paper we provide a local construction of a Sasakian manifold given a K\"ahler manifold. Obatined in this way manifold we call Sasakian lift of K\"ahler base. Almost contact metric structure is determined by the operation of the lift…

Differential Geometry · Mathematics 2023-03-24 Piotr Dacko

There is an obstruction to the existence of K\"ahler -Einstein metrics which is used to define the GIT weight for K-stability, and it has been extended to various geometric problems. This survey paper considers such extended obstructions to…

Differential Geometry · Mathematics 2018-09-06 Akito Futaki , Hajime Ono

The aim of this paper is to construct left-invariant Einstein pseudo-Riemannian Sasaki metrics on solvable Lie groups. We consider the class of $\mathfrak z$-standard Sasaki solvable Lie algebras of dimension $2n+3$, which are in one-to-one…

Differential Geometry · Mathematics 2023-04-26 Diego Conti , Federico A. Rossi , Romeo Segnan Dalmasso

In this paper we study certain types of metrics such as Ricci soliton, $*$-conformal Ricci soliton in 3-dimensional trans-Sasakian manifold. First we have shown that a 3-dimensional trans-Sasakian manifold of type $(\alpha,\beta)$ admits a…

Differential Geometry · Mathematics 2021-06-22 Sumanjit Sarkar , Santu Dey , Arindam Bhattacharyya

We generalize K\"ahler-Ricci solitons to the almost-K\"ahler setting as the zeros of Inoue's moment map \cite{MR4017922}, and show that their existence is an obstruction to the existence of first-Chern-Einstein almost-K\"ahler metrics on…

Differential Geometry · Mathematics 2024-02-07 Michael Albanese , Giuseppe Barbaro , Mehdi Lejmi

In this paper, we derive the uniform L^{4}-bound of the transverse conic Ricci curvature along the conic Sasaki-Ricci flow on a compact transverse log Fano Sasakian manifold M of dimension five and the space of leaves of the characteristic…

Differential Geometry · Mathematics 2024-08-16 Shu-Cheng Chang , Fengjiang Li , Chien Lin , Chin-Tung Wu

This is an expository article. Among other topics, we discuss the existence of Kahler-Ricci soliton metrics on toric Fano manifolds, and Kahler-Einstein metrics on deformations of the Mukai-Umemura 3-fold

Differential Geometry · Mathematics 2008-04-14 S. K. Donaldson

We establish a local equivalence between toric steady K\"ahler-Ricci solitons and $A$-type toric generalized K\"ahler-Ricci solitons (GKRS). Under natural global conditions we show this equivalence extends to complete GKRS, yielding a…

Differential Geometry · Mathematics 2025-09-04 Vestislav Apostolov , Giuseppe Barbaro , Jeffrey Streets , Yury Ustinovskiy

We consider coupled K\"ahler-Einstein metrics and weighted solitons on Fano manifolds. These are natural generalizations of K\"ahler-Einstein metrics. As in the case of K\"ahler-Einstein metrics, the existence is known to be equivalent to…

Differential Geometry · Mathematics 2026-05-12 Akito Futaki

We study $\eta$-Einstein Sasakian structures on Lie algebras, that is, Sasakian structures whose associated Ricci tensor satisfies an Einstein-like condition. We divide into the cases in which the Lie algebra's centre is non-trivial (and…

Differential Geometry · Mathematics 2026-01-21 Adrián M. Andrada , Simon G. Chiossi , Alberth J. Nuñez

We introduce a large class of canonical K\"ahler metrics, called in this paper well-behaved, extending metrics induced by complex space forms. We study K\"ahler--Ricci iterations of well-behaved metrics on compact and non-compact K\"ahler…

Differential Geometry · Mathematics 2023-07-24 Andrea Loi , Giovanni Placini

We show that Perelman's W-functional can be generalized to Sasaki-Ricci flow. When the basic first Chern class is positive, we prove a uniform bound on the scalar curvature, the diameter and a uniform $C^1$ bound for the transverse Ricci…

Differential Geometry · Mathematics 2011-03-31 Weiyong He

In this paper we investigate the possibility to obtain locally new Sasaki-Einstein metrics on the space $T^{1,1}$ considering a deformation of the standard metric tensor field. We show that from the geometric point of view this deformation…

Mathematical Physics · Physics 2020-06-11 Vladimir Slesar , Mihai Visinescu , Gabriel-Eduard Vîlcu

We extend Calabi ansatz over K\"ahler-Einstein manifolds to Sasaki-Einstein manifolds. As an application we prove the existence of a complete scalar-flat K\"ahler metric on K\"ahler cone manifolds over Sasaki-Einstein manifolds. In…

Differential Geometry · Mathematics 2011-08-23 Akito Futaki

We show that the generalized K\"ahler-Ricci soliton equation on 4-dimensional toric K\"ahler orbifolds reduces to ODEs assuming there is a Hamiltonian 2-form. This leads to an explicit resolution of this equation on labeled triangles and…

Differential Geometry · Mathematics 2012-09-05 Eveline Legendre , Christina W. Tønnesen-Friedman

In this short note, we prove that a Calabi extremal Kaehler-Ricci soliton on a compact toric Kaehler manifold is Einstein. This solves for the class of toric manifolds a general problem stated by the authors that they solved only under some…

Differential Geometry · Mathematics 2017-09-06 Simone Calamai , David Petrecca

We study the quantization of coupled K\"ahler-Einstein (CKE) metrics, namely we approximate CKE metrics by means of the canonical Bergman metrics, so called the ``balanced metrics''. We prove the existence and weak convergence of balanced…

Differential Geometry · Mathematics 2021-09-08 Ryosuke Takahashi

In this note, we construct new examples of Lorentzian Sasaki-Einstein (LSE) metrics on Smale manifolds $M.$ It has already been established in \cite{Gmz2} that such metrics exist on the so-called torsion free Smale manifolds, i.e. the…

Differential Geometry · Mathematics 2013-02-15 Ralph R. Gomez

Para-Ricci-like solitons with arbitrary potential on para-Sasaki-like Riemannian $\Pi$-manifolds are introduced and studied. For the studied soliton, it is proved that its Ricci tensor is a constant multiple of the vertical component of…

Differential Geometry · Mathematics 2022-02-28 Hristo Manev , Mancho Manev

We show that by taking a certain scaling limit of a Euclideanised form of the Plebanski-Demianski metrics one obtains a family of local toric Kahler-Einstein metrics. These can be used to construct local Sasaki-Einstein metrics in five…

High Energy Physics - Theory · Physics 2009-11-11 Dario Martelli , James Sparks