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The isotropic Dunkl oscillator model in three-dimensional Euclidean space is considered. The system is shown to be maximally superintegrable and its symmetries are obtained by the Schwinger construction using the raising/lowering operators…

数学物理 · 物理学 2015-06-18 Vincent X. Genest , Luc Vinet , Alexei Zhedanov

In this work we derive explicit entropy bounds for two classes of closed self-shrinkers: the class of embedded closed self-shrinkers recently constructed in arXiv:2207.04851 using isoparametric foliations of spheres, and the class of…

微分几何 · 数学 2023-06-22 John Man Shun Ma , Ali Muhammad

The two-dimensional extension of the one-dimensional PDM-Lagrangians and their nonlocal point transformation mappings into constant unit-mass exactly solvable Lagrangians is introduced. The conditions on the related two-dimensional…

数学物理 · 物理学 2017-11-23 Omar Mustafa

Our goal in this paper is to extend the theory of quasi-exactly solvable Schrodinger operators beyond the Lie-algebraic class. Let $\cP_n$ be the space of n-th degree polynomials in one variable. We first analyze "exceptional polynomial…

可精确求解与可积系统 · 物理学 2013-06-20 David Gomez-Ullate , Niky Kamran , Robert Milson

In this paper we provide new existence results for isoperimetric sets of large volume in Riemannian manifolds with nonnegative Ricci curvature and Euclidean volume growth. We find sufficient conditions for their existence in terms of the…

微分几何 · 数学 2022-03-08 Gioacchino Antonelli , Elia Bruè , Mattia Fogagnolo , Marco Pozzetta

In this paper, we investigate a conformally flat and complete manifold $(M,g)=(\mathbb{R}^n,e^{2u}|dx|^2)$ with finite total Q-curvature. We introduce a new volume entropy, incorporating the background Euclidean metric, and demonstrate that…

微分几何 · 数学 2024-06-18 Mingxiang Li

It is shown that the local coupling of a higher dimensional graviton to a closed degenerate two-form produces dimensional reduction by spontaneous breakdown of extra-dimensional translational symmetry. Four dimensional Poincar\'e invariance…

高能物理 - 理论 · 物理学 2007-05-23 P. Maraner

We introduce and study the Steiner entire function, an analytic generating function for the intrinsic volumes of a convex compact set in a Hilbert space. This function extends the classical Steiner polynomial to infinite dimensions and…

度量几何 · 数学 2025-07-17 Maria Dospolova , Mikhail Germanskov , Dmitry Zaporozhets

We consider complete K\"ahler manifolds with nonnegative Ricci curvature. The main results are: 1. When the manifold has nonnegative bisectional curvature, we show that $\lim\limits_{r\to\infty}\frac{r^{2}}{vol(B(p, r))}\int_{B(p, r)}S$…

微分几何 · 数学 2024-04-15 Gang Liu

In this paper, we obtain the optimal rigidity of dimension estimate for holomorphic functions with polynomial growth on K\"ahler manifolds with non-negative holomorphic bisectional curvature. There is a specific gap between the largest and…

微分几何 · 数学 2026-03-26 Jianchun Chu , Jie Deng , Zihang Hao , Jian Li

We give the general Kerr-de Sitter metric in arbitrary spacetime dimension D\ge 4, with the maximal number [(D-1)/2] of independent rotation parameters. We obtain the metric in Kerr-Schild form, where it is written as the sum of a de Sitter…

高能物理 - 理论 · 物理学 2009-10-07 G. W. Gibbons , H. Lu , D. N. Page , C. N. Pope

In this paper, maximum principles for Euclidean and hyperbolic discrete conformal structures on polyhedral surfaces are established. These maximum principles unify and generalize the maximum principles for vertex scalings and different…

度量几何 · 数学 2025-06-19 Yanwen Luo , Xu Xu , Chao Zheng

We study the asymptotic behavior of the K\"ahler-Ricci flow on K\"ahler manifolds of nonnegative holomorphic bisectional curvature. Using these results we prove that a complete noncompact K\"ahler manifold with nonnegative bounded…

微分几何 · 数学 2016-09-07 Albert Chau , Luen-Fai Tam

We establish existence and regularity results for normal Coulomb frames in the normal bundle of two-dimensional surfaces of disc-type embedded in Euclidean spaces of higher dimensions.

微分几何 · 数学 2009-10-13 Steffen Froehlich

Our first purpose is to extend the results from \cite{T} on the radial defocusing NLS on the disc in $\mathbb{R}^2$ to arbitrary smooth (defocusing) nonlinearities and show the existence of a well-defined flow on the support of the Gibbs…

偏微分方程分析 · 数学 2015-08-12 Jean Bourgain , Aynur Bulut

We establish half-space type results for a class of height-dependent weighted minimal surfaces in $\mathbb{R}^3$, namely critical points of a weighted area functional whose weight depends on the height. When the weight has at most quadratic…

微分几何 · 数学 2026-01-30 A. L. Martínez-Triviño , J. P. dos Santos , G. Tinaglia

A closed four dimensional manifold cannot possess a non-flat Ricci soliton metric with arbitrarily small $L^2$-norm of the curvature. In this paper, we localize this fact in the case of shrinking Ricci solitons by proving an…

微分几何 · 数学 2018-09-07 Shaosai Huang

We consider in any dimension the supersymmetric $\mathbb{Z}_2$ truncations of the maximal supergravity theories. In each dimension and for each truncation we determine all the sets of 1/2-BPS space-filling branes that preserve the…

高能物理 - 理论 · 物理学 2018-08-01 Giuseppe Dibitetto , Fabio Riccioni , Stefano Risoli

This paper has studied the three-dimensional Dunkl oscillator models in a generalization of superintegrable Euclidean Hamiltonian systems to curved ones. These models are defined based on curved Hamiltonians, which depend on a deformation…

可精确求解与可积系统 · 物理学 2022-07-27 Shi-Hai Dong , Amene Najafizade , Hossein Panahi , Won Sang Chung , Hassan Hassanabadi

By developing the method of multipliers, we establish sufficient conditions on the electric potential and magnetic field which guarantee that the corresponding two-dimensional Schroedinger operator possesses no point spectrum. The settings…

谱理论 · 数学 2018-11-26 Luca Fanelli , David Krejcirik , Luis Vega