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We develop a biophysically realistic model of the nematode C. elegans that includes: (i) its muscle structure and activation, (ii) key connectomic activation circuitry, and (iii) a weighted and time-dynamic proprioception. In combination,…

Biological Physics · Physics 2018-03-02 Charles Fieseler , James Kunert-Graf , J. Nathan Kutz

Characterizing accurately chaotic behaviors is not a trivial problem and must allow to determine the properties that two given chaotic invariant sets share or not. The underlying problem is the classification of chaotic regimes, and their…

Chaotic Dynamics · Physics 2022-03-09 Christophe Letellier , Nataliya Stankevich , Otto E. Rössler

Most animals possess the ability to actuate a vast diversity of movements, ostensibly constrained only by morphology and physics. In practice, however, a frequent assumption in behavioral science is that most of an animal's activities can…

Quantitative Methods · Quantitative Biology 2014-08-13 Gordon J. Berman , Daniel M. Choi , William Bialek , Joshua W. Shaevitz

Systems comprised of self-steering active Brownian particles are studied via simulations for a minimal cognitive flocking model. The dynamics of the active Brownian particles is extended by an orientational response with limited…

Soft Condensed Matter · Physics 2024-06-04 Rajendra Singh Negi , Roland G. Winkler , Gerhard Gompper

In this paper, we will study the statistical behaviors of orbits. Firstly, we will show that for a dynamical systems have the shadowing property or almost specification property, the set of nonrecurrent points has full topological entropy.…

Dynamical Systems · Mathematics 2025-01-22 Yiwei Dong , Xiaobo Hou , Wanshan Lin , Xueting Tian

We study equilibrium selection for invariant measures of stochastic dynamical systems with constant step size, under persistent noise and minimal moment assumptions, in a general quasi-Feller framework. Such dynamics arise in…

Probability · Mathematics 2026-01-16 Jean-Gabriel Attali

This work introduces a new theoretical model for active matter ("complementary-spins" or c-spins), exploring the interplay of positional and orientational order in mobile agents with rotational freedom, divided into two populations with…

Soft Condensed Matter · Physics 2025-11-20 Alessandro Scirè

We consider the dynamical behavior of Martin-L\"of random points in dynamical systems over metric spaces with a computable dynamics and a computable invariant measure. We use computable partitions to define a sort of effective symbolic…

Dynamical Systems · Mathematics 2008-04-29 Stefano Galatolo , Mathieu Hoyrup , Cristobal Rojas

We study the asymptotic behavior of the trajectory of a nonautonomous evolution equation governed by a quasi-nonexpansive operator in Hilbert spaces. We prove the weak convergence of the trajectory to a fixed point of the operator by…

Optimization and Control · Mathematics 2020-09-08 Ming Zhu , Rong Hu , Ya-Ping Fang

Free-living nematode Caenorhabditis elegans is a powerful genetic model, essential for investigations ranging from behavior to neuroscience to aging, and locomotion is a key observable used in these studies. However, despite the fact that…

Biological Physics · Physics 2019-01-18 Alejandro Bilbao , Amar K. Patel , Mizanur Rahman , Siva A. Vanapalli , Jerzy Blawzdziewicz

Brains process information through the collective dynamics of large neural networks. Collective chaos was suggested to underlie the complex ongoing dynamics observed in cerebral cortical circuits and determine the impact and processing of…

Chaotic Dynamics · Physics 2020-06-04 Rainer Engelken , Fred Wolf , L. F. Abbott

We prove a motivic stabilization result for the cohomology of the local systems on configuration spaces of varieties over $\mathbb{C}$ attached to character polynomials. Our approach interprets the stabilization as a probabilistic…

Algebraic Geometry · Mathematics 2020-12-16 Sean Howe

Pattern formation analysis of eco-epidemiological models with cannibalism and disease has been less explored in the literature. Therefore, motivated by this, we have proposed a diffusive eco-epidemiological model and performed pattern…

Analysis of PDEs · Mathematics 2021-03-09 Nitu Kumari , Vikas Kumar , Ravi P. Agarwal

This paper deals with random dynamical systems of polynomial automorphisms (complex generalized H\'{e}non maps and their conjugate maps) of $\Bbb{C}^{2}.$ We show that a generic random dynamical system of polynomial automorphisms has ``mean…

Dynamical Systems · Mathematics 2025-05-30 Hiroki Sumi

Scrambling of information in a quantum many-body system, quantified by the out-of-time-ordered correlator (OTOC), is a key manifestation of quantum chaos. A regime of exponential growth in the OTOC, characterized by a Lyapunov exponent, has…

Strongly Correlated Electrons · Physics 2021-03-24 Anna Keselman , Laimei Nie , Erez Berg

We develop a deterministic large-time mechanism yielding Ces{\`a}ro asymptotic observability inequalities from moving localized observations for conservative evolutions. On each observation interval, exact convexification on a compact…

Analysis of PDEs · Mathematics 2026-05-13 Maarten V. de Hoop , Antti Kykkänen , Emmanuel Trélat

Computational approaches which emulate in-vivo nervous system are needed to investigate mechanisms of the brain to orchestrate behavior. Such approaches must integrate a series of biophysical models encompassing the nervous system, muscles,…

Quantitative Methods · Quantitative Biology 2025-06-05 Jimin Kim , Jeremy T. Florman , Julia A. Santos , Mark J. Alkema , Eli Shlizerman

We study the disorder-induced localisation transition in a three-dimensional network model that belongs to symmetry class C. The model represents quasiparticle dynamics in a gapless spin-singlet superconductor without time-reversal…

Mesoscale and Nanoscale Physics · Physics 2013-05-29 M. Ortuño , A. M. Somoza , J. T. Chalker

The presence of chaos in classical Hamiltonian systems is witnessed by its maximal Lyapunov exponent, that quantifies the instability of motion through the exponential growth of indicators such as the trace of the stability matrix or the…

Chaotic Dynamics · Physics 2026-03-30 Thomas R. Michel , Mathias Steinhuber , Juan Diego Urbina , Peter Schlagheck

We show that the existence of physical measures for $C^\infty$ smooth instances of certain partially hyperbolic dynamics, both continuous and discrete, exhibiting mixed behavior (positive and negative Lyapunov exponents) along the central…

Dynamical Systems · Mathematics 2025-06-10 Vitor Araujo , Luciana Salgado
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