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In this paper, we study Pizzetti-type formulas for Stiefel manifolds and Cauchy-type formulas for the tangential Dirac operator from a distributional perspective. First we illustrate a general distributional method for integration over…

数学物理 · 物理学 2020-04-24 Alí Guzmán Adán , Frank Sommen

We define two types of pseudo-differential perturbations of the Dirac operator within the framework of the noncommutative geometry. And we obtain the noncommutative residue of the inverse square of these perturbations on 4-dimensional…

微分几何 · 数学 2024-09-26 Tong Wu , Yong Wang

We discuss how to generalize a Dirac operator such that the solution of a Dirac equation is of bounded variation rather than continuous. We build the spectral theory for generalized Dirac operators and discuss the connection between them…

谱理论 · 数学 2025-08-13 Jie Zeng

This seminal paper marks the beginning of our investigation into on the spectral theory based on $S$-spectrum applied to the Dirac operator on manifolds. Specifically, we examine in detail the cases of the Dirac operator $\mathcal{D}_H$ on…

泛函分析 · 数学 2025-04-18 Ivan Beschastnyi , Fabrizio Colombo , Simão Andrade Lucas , Irene Sabadini

We derive a formula for the index of a Dirac operator on a compact, even-dimensional incomplete edge space satisfying a "geometric Witt condition". We accomplish this by cutting off to a smooth manifold with boundary, applying the…

微分几何 · 数学 2016-09-09 Pierre Albin , Jesse Gell-Redman

In this paper, using the recently discovered notion of the $S$-spectrum, we prove the spectral theorem for a bounded or unbounded normal operator on a Clifford module (i.e., a two-sided Hilbert module over a Clifford algebra based on units…

泛函分析 · 数学 2021-12-13 Fabrizio Colombo , David P. Kimsey

We show that for generic Riemannian metrics on a simply-connected closed spin manifold of dimension at least 5 the dimension of the space of harmonic spinors is no larger than it must be by the index theorem. The same result holds for…

微分几何 · 数学 2011-07-22 Christian Baer , Mattias Dahl

Using Weitzenb\"ock techniques on any compact Riemannian spin manifold we derive a general inequality depending on a real parameter and joining the spectrum of the Dirac operator with terms depending on the Ricci tensor and its first…

微分几何 · 数学 2007-05-23 Klaus-Dieter Kirchberg

In this paper we study Dirac-Einstein equations on manifolds with boundary, restricted to a conformal class with constant boundary volume, under chiral bag boundary conditions for the Dirac operator. We characterize the bubbling phenomenon,…

微分几何 · 数学 2022-10-14 William Borrelli , Ali Maalaoui , Vittorio Martino

We give results about the L^2 kernel and the spectrum of the Dirac operator on a complete Riemannian manifold which is conformally equivalent to the interior of a Riemannian manifold with nonempty boundary.

微分几何 · 数学 2007-05-23 John Lott

We prove regularity for a class of boundary value problems for first order elliptic systems, with boundary conditions determined by spectral decompositions, under coefficient differentiability conditions weaker than previously known. We…

微分几何 · 数学 2007-05-23 P. T. Chrusciel , R. Bartnik

We carry the index theory for manifolds with boundary of B\"ar and Ballmann over to first order differential operators on metric graphs. This approach results in a short proof for the index of such operators. Then the self-adjoint…

谱理论 · 数学 2024-03-20 Alberto Richtsfeld

We consider on a spin manifold with boundary a Dirac operator $D_A$ with chiral boundary conditions, twisted by a unitary connection $A$. When $m$ is not in the chiral spectrum of $D_A$, we define an analogue of the Dirichlet-to-Neumann map…

偏微分方程分析 · 数学 2025-11-26 Carlos Valero

In his book Mickelsson notices that the infinite-dimensional Grassmannian manifold of Segal and Wilson admits a Spin^c structure and after this he naturally considers the problem of defining a Dirac operator on it. Mickelsson gives a…

表示论 · 数学 2010-07-27 Vesa Tahtinen

Fundamental solutions of Dirac type operators are introduced for a class of conformally flat manifolds. This class consists of manifolds obtained by factoring out the upper half-space of $\mathbb{R}^n$ by arithmetic subgroups of generalized…

偏微分方程分析 · 数学 2007-05-23 Elizabeth Bulla , Denis Constales , Rolf Soeren Krausshar , John Ryan

In this paper, we consider the eigenvalue problem of Dirac operator on a compact Riemannian manifold isometrically immersed into Euclidean space and derive some extrinsic estimates for the sum of arbitrary consecutive $n$ eigenvalues of the…

微分几何 · 数学 2024-02-23 Lingzhong Zeng

New extrinsic lower bounds are given for the classical Dirac operator on the boundary of a compact domain of a spin manifold. The main tool is to solve some boundary problems for the Dirac operator of the domain under boundary conditions of…

微分几何 · 数学 2007-05-23 Oussama Hijazi , Sebastian Montiel , Xiao Zhang

We give an expression, in terms of boundary spectral functions, for the spectral asymmetry of the Euclidean Dirac operator in two dimensions, when its domain is determined by local boundary conditions, and the manifold is of product type.…

高能物理 - 理论 · 物理学 2008-11-26 C. G. Beneventano , E. M. Santangelo , A. Wipf

We compute, in topological terms, the spectral flow of an arbitrary family of self-adjoint Dirac type operators with classical (local) boundary conditions on a compact Riemannian manifold with boundary under the assumption that the initial…

偏微分方程分析 · 数学 2012-10-08 M. I. Katsnelson , V. E. Nazaikinskii

We introduce a slight modification of the usual equivariant $KK$-theory. We use this to give a $KK$-theoretical proof of an equivariant index theorem for Dirac-Schrodinger operators on a non-compact manifold of nowhere positive curvature.…

K理论与同调 · 数学 2023-06-28 Y. Abdolmaleki , D. Kucerovsky