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This is a survey article on a known generalization of Dirac-type operators to transverse operators called basic Dirac operators on Riemannian foliations, which are smooth foliations that have a transverse geometric structure. Construction…

微分几何 · 数学 2009-09-01 Ken Richardson

In this note we give a characterization of taut Riemannian foliations using the transverse divergence. This result turns out to be a convenient tool in the case of some standard examples. Furthermore, we show that a classical tautness…

微分几何 · 数学 2016-02-10 Vladimir Slesar

The Dirac method is used to analyze the classical and quantum dynamics of a particle constrained on a circle. The method of Lagrange multipliers is scrutinized, in particular in relation to the quantization procedure. Ordering problems are…

量子物理 · 物理学 2015-06-26 Antonello Scardicchio

We study the interplay between basic Dirac operator and transverse Killing and twistor spinors. In order to obtain results for general Riemannian foliations with bundle-like metric we consider transverse Killing spinors that appear as…

数学物理 · 物理学 2013-09-03 Adrian Mihai Ionescu , Vladimir Slesar , Mihai Visinescu , Gabriel-Eduard Vilcu

Using the method of Witten deformation, we express the basic index of a transversal Dirac operator over a Riemannian foliation as the sum of integers associated to the critical leaf closures of a given foliated bundle map.

微分几何 · 数学 2021-01-28 Igor Prokhorenkov , Ken Richardson

We review some applications of noncommutative geometry to the study of transverse geometry of Riemannian foliations and discuss open problems.

微分几何 · 数学 2007-05-23 Yuri Kordyukov

We study the classical limit of quantum mechanics on graphs by introducing a Wigner function for graphs. The classical dynamics is compared to the quantum dynamics obtained from the propagator. In particular we consider extended open graphs…

凝聚态物理 · 物理学 2009-11-07 Felipe Barra , Pierre Gaspard

In this manuscript we present how to collapse a manifold equipped with a closed flat regular Riemannian foliation with leaves of positive dimension, while keeping the sectional curvature uniformly bounded from above and below. From this…

微分几何 · 数学 2026-01-16 Diego Corro

We extend the groundbreaking results of Gromov and Lawson on positive scalar curvature and the Dirac operator on complete Riemannian manifolds to Dirac operators defined along the leaves of foliations of non-compact complete Riemannian…

微分几何 · 数学 2022-10-26 Moulay Tahar Benameur , James L. Heitsch

We discuss the dynamics of the Dirac fermions in the general strong gravitational and electromagnetic fields. We derive the general Hermitian Dirac Hamiltonian and transform it to the Foldy-Wouthuysen representation for the spatially…

高能物理 - 理论 · 物理学 2011-08-08 Yuri N. Obukhov , Alexander J. Silenko , Oleg. V. Teryaev

This work concerns a study of the quantum mechanical extension of the work of Horwitz et al. [1] on the stability of classical Hamiltonian systems by geometrical methods. Simulations are carried out for several important examples, these…

量子物理 · 物理学 2017-04-12 Gil Elgressy , Lawrence Horwitz

A smooth foliation is Riemannian when its leaves are locally equidistant. The closures of the leaves of a Riemannian foliation on a simply connected manifold, or more generally of a Killing foliation, are described by flows of transverse…

微分几何 · 数学 2022-10-05 Marcos M. Alexandrino , Francisco C. Caramello

In this paper we study several dynamical properties of the riemannian $1$-dimensional foliation $\mathcal{L}$ on an oriented closed 3-manifold $M$. Carriere classified such pairs $(M,\mathcal{L})$. Using the classification we prove the…

动力系统 · 数学 2018-06-26 Jaeyoo Choy , Hahng-Yun Chu

In these survey lectures, we investigate the geometric and analytic properties of transverse Dirac operators. In particular, we define a transverse Dirac operator associated to a distribution that is essentially self-adjoint (Prokhorenkov-R…

微分几何 · 数学 2021-01-28 Ken Richardson

A transitive compact foliated space is shown to be a Riemannian foliation if and only if it is locally connected, finite dimensional, strongly equicontinuous and quasi-analytic, and the closure of its holonomy pseudogroup is quasi-analytic.

几何拓扑 · 数学 2013-11-15 Jesús A. Álvarez López , Alberto Candel

The quantum dynamics of many-qubit systems is an outstanding problem that has recently driven significant advances in both numerical methods and programmable quantum processing units. In this work, we employ a comprehensive toolbox of…

We study the transversely metaplectic structure and the transversely symplectic Dirac operator on a transversely symplectic foliation. Moreover, we give the Weitzenbock type formula for transversely symplectic Dirac operators and we…

微分几何 · 数学 2021-12-17 Seoung Dal Jung

We obtain a vanishing theorem for the half-kernel of a transverse ${\rm Spin}\sp c$ Dirac operator on a compact manifold endowed with a transversely almost complex Riemannian foliation twisted by a sufficiently large power of a line bundle,…

微分几何 · 数学 2007-08-14 Yuri A. Kordyukov

A Riemmanian foliated dynamical system of 3-dimension $(\mathrm{RFDS}^{3})$ is a closed Riemannian 3-manifold with additional structures: foliation, dynamical system. In the context of arithmetic topology, it is a geometric/analytic…

动力系统 · 数学 2019-12-05 Junhyeong Kim

We investigate transverse H\"older regularity of some canonical leaf conjugacies in partially hyperbolic dynamical systems and transverse H\"older regularity of some invariant foliations. Our results validate claims made elsewhere in the…

动力系统 · 数学 2012-04-10 Charles Pugh , Michael Shub , Amie Wilkinson
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