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Related papers: Analytic torsions on contact manifolds

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We define a differential graded algebra associated to Legendrian knots in Seifert fibered spaces with transverse contact structures. This construction is distinguished from other combinatorial realizations of contact homology invariants by…

Symplectic Geometry · Mathematics 2010-12-14 Joan E. Licata , Joshua M. Sabloff

We show that a metric $f$-manifold $(M^{2n+s}, \phi, \xi_i, \eta_j, g)$ satisfying the property $[\xi_i, \xi_j]=0$ for all $i, j\in\{1, \ldots, s\}$ admits a metric connection $\nabla$ with skew-torsion $T$ preserving the structure if and…

Differential Geometry · Mathematics 2025-11-19 Aleksandra Borówka , Ioannis Chrysikos

We provide obstructions to the existence of conformally Anosov Reeb flows on a 3-manifold that partially generalize similar obstructions to Anosov Reeb flows. In particular, we show $\mathbb{S}^3$ does not admit conformally Anosov Reeb…

Geometric Topology · Mathematics 2020-09-08 Surena Hozoori

Let (M,g) be an odd-dimensional incomplete compact Riemannian singular space with a simple edge singularity. We study the analytic torsion on M, and in particular consider how it depends on the metric g. If g is an admissible edge metric,…

Spectral Theory · Mathematics 2015-02-02 Rafe Mazzeo , Boris Vertman

In this paper, we study and almost completely classify contact structures on closed 3--manifolds which are totally geodesic for some Riemannian metric. Due to previously known results, this amounts to classifying contact structures on…

Geometric Topology · Mathematics 2014-11-11 Patrick Massot

Let $(M, \xi)$ be a compact contact 3-manifold and assume that there exists a contact form $\alpha_0$ on $(M, \xi)$ whose Reeb flow is Anosov. We show this implies that every Reeb flow on $(M, \xi)$ has positive topological entropy. Our…

Dynamical Systems · Mathematics 2015-12-11 Marcelo R. R. Alves

We study the renormalized analytic torsion of complete manifolds with fibred boundary metrics, also referred to as $\phi$-metrics. We establish invariance of the torsion under suitable deformations of the metric, and establish a gluing…

Differential Geometry · Mathematics 2025-08-25 Jørgen Olsen Lye , Boris Vertman

We demonstrate that the functorial properties of the symplectic field theory under strong cobordisms and surgery cobordisms can produce finite algebraic (planar) torsions from simple examples, which gives a unified treatment of most of the…

Symplectic Geometry · Mathematics 2026-03-09 Zhengyi Zhou

Through the use of sub-Riemannian metrics we provide quantitative estimates for the maximal tight neighbourhood of a Reeb orbit on a three-dimensional contact manifold. Under appropriate geometric conditions we show how to construct closed…

Differential Geometry · Mathematics 2025-11-18 Andrei A. Agrachev , Stefano Baranzini , Eugenio Bellini , Luca Rizzi

Analytical expressions are derived for classical trajectories in repulsive Coulomb plus multi-step attractive potentials. Thereafter the closed form expressions are obtained for classical deflection functions. The expressions are expected…

Nuclear Theory · Physics 2007-05-23 S. K. Gupta , Arun K. Jain , B. M. Jyrwa

We determine the homotopy type of isotropic torus complements in closed contact manifolds in terms of Reeb dynamics of special contact forms. For that we utilize holomorphic curve techniques known from symplectic field theory as…

Symplectic Geometry · Mathematics 2019-03-28 Kilian Barth , Jay Schneider , Kai Zehmisch

In this technical note we give a purely geometric understanding of discrete torsion, as an analogue of orbifold Wilson lines for two-form tensor field potentials. In order to introduce discrete torsion in this context, we describe gerbes…

High Energy Physics - Theory · Physics 2007-05-23 Eric R. Sharpe

We consider a pair of smooth manifolds, which are the counterparts in the even-dimensional and odd-dimensional cases. They are separately an almost complex manifold with Norden metric and an almost contact manifolds with B-metric,…

Differential Geometry · Mathematics 2015-05-06 Mancho Manev

We study the analytic torsion of the cone over an orientable odd dimensional compact connected Riemannian manifold W. We prove that the logarithm of the analytic torsion of the cone decomposes as the sum of the logarithm of the root of the…

Differential Geometry · Mathematics 2012-10-12 L. Hartmann , M. Spreafico

In this paper we define a regularized version of the analytic torsion for arithmetic quotients of the symmetric space SL(n,R)/\SO(n). The definition is based on the study of the renormalized trace of the corresponding heat operators, which…

Representation Theory · Mathematics 2017-09-18 Jasmin Matz , Werner Mueller

We classify tight contact structures with zero Giroux torsion on some Seifert-fibered manifolds with four exceptional fibers. We get the lower bound by constructing contact structures using Legendrian surgery. We use convex surface theory…

Geometric Topology · Mathematics 2025-04-04 Tanushree Shah

We prove that every nondegenerate contact form on a closed connected three-manifold, such that the associated contact structure has torsion first Chern class, has either two or infinitely many simple Reeb orbits. By previous results it…

Symplectic Geometry · Mathematics 2020-01-08 Dan Cristofaro-Gardiner , Michael Hutchings , Dan Pomerleano

A point q in a contact manifold is called a translated point for a contactomorphism \phi, with respect to some fixed contact form, if \phi(q) and q belong to the same Reeb orbit and the contact form is preserved at q. In this article we…

Symplectic Geometry · Mathematics 2012-06-19 Sheila Sandon

Given a number field $F$ with ring of integers $\mathcal{O}_{F}$, one can associate to any torsion free subgroup of $\operatorname{SL}(2,\mathcal{O}_{F})$ of finite index a complete Riemannian manifold of finite volume with fibered cusp…

Differential Geometry · Mathematics 2026-02-17 Werner Mueller , Frédéric Rochon

Gay and Kirby introduced trisections which describe any closed oriented smooth 4-manifold $X$ as a union of three four-dimensional handlebodies. A trisection is encoded in a diagram, namely three collections of curves in a closed oriented…

Geometric Topology · Mathematics 2021-06-21 Vincent Florens , Delphine Moussard
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