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We introduce a family of hyperbolic flows on non-compact phase spaces that includes the geodesic flow on the modular surface. For these systems we prove exponential decay of correlations for sufficiently regular observables with respect to…

Dynamical Systems · Mathematics 2026-03-25 Nicola Bertozzi , Claudio Bonanno , Paulo Varandas

We establish exponential mixing for the geodesic flow $\varphi_t\colon T^1S\to T^1S$ of an incomplete, negatively curved surface $S$ with cusp-like singularities of a prescribed order. As a consequence, we obtain that the Weil-Petersson…

Dynamical Systems · Mathematics 2016-05-31 Keith Burns , Howard Masur , Carlos Matheus , Amie Wilkinson

We prove a $C^1$ version of a conjecture by Pugh and Shub: among partially hyperbolic volume-preserving $C^r$ diffeomorphisms, $r>1$, the stably ergodic ones are $C^1$-dense. To establish these results, we develop new perturbation tools for…

Dynamical Systems · Mathematics 2017-09-18 A. Avila , S. Crovisier , A. Wilkinson

We give the first examples of flows which exhibit robust singular attractors containing a wild hyperbolic set (in the sense of Newhouse). A hyperbolic set is said to be wild, if it has tangencies between its stable and unstable manifolds,…

Dynamical Systems · Mathematics 2007-05-23 R. Bamon , J. Kiwi , J. Rivera

We use unbiased computational methods to elucidate the onset and properties of pair superfluidity in two-species fermionic and bosonic systems with onsite interspecies attraction loaded in one-dimensional optical lattice. We compare results…

Quantum Gases · Physics 2021-07-14 B. Grémaud , G. G. Batrouni

We describe some recent results on the dynamics of singular-hyperbolic (or Lorenz-like) attractors: attractors in this class are expansive and so sensitive with respect to initial data; they admit a unique physical measure whose support is…

Dynamical Systems · Mathematics 2010-08-31 Vitor Araujo , Maria Jose Pacifico

In this paper we study the multifractal analysis and large derivations for singular hyperbolic attractors, including the geometric Lorenz attractors. For each singular hyperbolic homoclinic class whose periodic orbits are all homoclinically…

Dynamical Systems · Mathematics 2023-07-10 Yi Shi , Xueting Tian , Paulo Varandas , Xiaodong Wang

We use entropy theory as a new tool to study sectional hyperbolic flows in any dimension. We show that for $C^1$ flows, every sectional hyperbolic set $\Lambda$ is entropy expansive, and the topological entropy varies continuously with the…

Dynamical Systems · Mathematics 2020-07-17 Maria Jose Pacifico , Fan Yang , Jiagang Yang

We prove that for every three-dimensional vector field, either it can be accumulated by Morse-Smale ones, or it can be accumulated by ones with a transverse homoclinic intersection of some hyperbolic periodic orbit in the $C^1$ topology.

Dynamical Systems · Mathematics 2013-02-06 Shaobo Gan , Dawei Yang

We prove a strong multiplicity one theorem for the length spectrum of compact even dimensional hyperbolic spaces i.e. if all but finitely many closed geodesics for two compact even dimensional hyperbolic spaces have the same length, then…

Number Theory · Mathematics 2011-02-09 Chandrasheel Bhagwat , C. S. Rajan

We prove that the geodesic flow on closed surfaces displays a hyperbolic set if the shadowing property holds C2-robustly on the metric. Similar results are obtained when considering even feeble properties like the weak shadowing and the…

Dynamical Systems · Mathematics 2017-06-29 Mario Bessa , Maria Joana Torres , Joao Lopes Dias

The coexistence of singularities and regular orbits in chain transitive sets has been a major obstacle in understanding the hyperbolic/partial hyperbolic nature of robust dynamics. Notably, the vector fields with all periodic orbits…

Dynamical Systems · Mathematics 2022-04-15 Jennyffer Bohorquez , Adriana da Luz , Nelda Jaque

Bonatti and da Luz have introduced the class of \emph{multi-singular hyperbolic} vector fields to characterize systems whose periodic orbits and singularities do not bifurcate under perturbation (called star vector fields). In this paper,…

Dynamical Systems · Mathematics 2024-05-27 Sylvain Crovisier , Xiaodong Wang , Dawei Yang , Jinhua Zhang

We relate dominated splitting for a linear multiplicative cocyle with dominated splitting for the exterior powers of this cocycle. For a C1 vector field X on a 3-manifold, we can obtain singular-hyperbolicity using only the tangent map DX…

Dynamical Systems · Mathematics 2016-10-24 Vitor Araujo , Luciana Salgado

We present criteria for statistical stability of attracting sets for vector fields using dynamical conditions on the corresponding generated flows. These conditions are easily verified for all singular-hyperbolic attracting sets of $C^2$…

Dynamical Systems · Mathematics 2021-03-04 Vitor Araujo

We prove that any 3-dimensional singular hyperbolic attractor admits for any H\"older continuous potential $V$ at most one equilibrium state for $V$ among regular measures. We give a condition on $V$ which ensures that no singularity can be…

Dynamical Systems · Mathematics 2019-05-16 Renaud Leplaideur

In this work we study the existence of singular flows satisfying shadowing-like properties. More precisely, we prove that if C1 -vector field on a closed manifold induces a chain-recurrent flow containing an attached hyperbolic singularity…

Dynamical Systems · Mathematics 2024-10-24 Alexander Arbieto , Andrés M. López , Elias Rego , Yeison Sánchez

Let $\mathcal{M}=\Gamma\backslash\mathbb{H}^{d+1}$ be a geometrically finite hyperbolic manifold with critical exponent exceeding $d/2$. We obtain a precise asymptotic expansion of the matrix coefficients for the geodesic flow in…

Dynamical Systems · Mathematics 2021-01-14 Samuel C. Edwards , Hee Oh

We show that there exists a $C^2$ open dense set of convex bodies with smooth boundary whose billiard map exhibits a non-trivial hyperbolic basic set. As a consequence billiards in generic convex bodies have positive topological entropy and…

Dynamical Systems · Mathematics 2024-02-22 Mário Bessa , Gianluigi Del Magno , João Lopes Dias , José Pedro Gaivão , Maria Joana Torres

We prove that the set of diffeomorphisms having at most finitely many attractors contains a dense and open subset of the space of $C^1$ partially hyperbolic diffeomorphisms with one-dimensional center. This is obtained thanks to a robust…

Dynamical Systems · Mathematics 2019-12-11 Sylvain Crovisier , Rafael Potrie , Martín Sambarino