A5106496710- Nonlinear Dynamics and Pattern Formation
- Theoretical and Computational Physics
- Cold Atom Physics and Bose-Einstein Condensates
- stochastic dynamics and bifurcation
- Opinion Dynamics and Social Influence
- Advanced Thermodynamics and Statistical Mechanics
- Neural Networks Stability and Synchronization
- Neural dynamics and brain function
- Complex Network Analysis Techniques
- Quantum, superfluid, helium dynamics
- Complex Systems and Time Series Analysis
- Material Dynamics and Properties
- EEG and Brain-Computer Interfaces
- Neural and Behavioral Psychology Studies
- Quantum chaos and dynamical systems
- Chaos control and synchronization
- Memory Processes and Influences
- Functional Brain Connectivity Studies
- Cellular Automata and Applications
- Quantum many-body systems
- Gene Regulatory Network Analysis
- Cognitive Functions and Memory
- Lysosomal Storage Disorders Research
- Phase Equilibria and Thermodynamics
- Mathematical Dynamics and Fractals
Universidad Carlos III de Madrid
2020-2024
Universidad Politécnica de Madrid
2010-2023
Universidad Tecnológica de Panamá
2023
Centro Nacional de Biotecnología
2023
Hospital del Niño
2018-2022
Hospital Italiano de Buenos Aires
2021
Hospital de Niños Superiora Sor María Ludovica
2021
Sanofi (France)
2021
University of Mendoza
2021
International Society of Nephrology
2021
In this Letter we identify the general rules that determine synchronization properties of interconnected networks. We study analytically, numerically and experimentally how degree nodes through which two networks are connected influences ability whole system to synchronize. show connecting high-degree (low-degree) each network turns out be most (least) effective strategy achieve synchronization. find functional relation between synchronizability size for a given network-of-networks, report...
Abstract Inter-layer synchronization is a dynamical process occurring in multi-layer networks composed of identical nodes. This emerges when all layers are synchronized, while nodes each layer do not necessarily evolve unison. So far, the study such inter-layer has been restricted to case which have an connectivity structure. When identical, synchronous state no longer stable solution system. Nevertheless, differ just few links, approximate treatment still feasible, and allows one gather...
Inter-layer synchronization is a distinctive process of multiplex networks whereby each node in given layer undergoes synchronous evolution with all its replicas other layers, irrespective whether or not it synchronized the units same layer. We analytically derive necessary conditions for existence and stability inter-layer synchronization, verify numerically analytical predictions several cases where such state emerges. inspect impact topology on robustness against progressive...
Mild cognitive impairment (MCI) has been considered an intermediate state between healthy aging and dementia. The early damage in anatomical connectivity progressive loss of synapses that characterize Alzheimer's disease suggest MCI co
Synchronization is a collective phenomenon occurring in systems of interacting units, and ubiquitous nature, society technology. Recent studies have enlightened the important role played by interaction topology on emergence synchronized states. However, most these neglect that real world change their patterns time. Here, we analyze synchronization features networks which structural dynamical co-evolve. The feedback node dynamics pattern ruled competition two mechanisms: homophily...
We consider a set of interacting phase oscillators, with coupling between synchronized nodes adaptively reinforced, and the constraint limited resource for node to establish connections other units network. show that such competitive mechanism leads emergence rich modular structure underlying cluster synchronization, scale-free distribution connection strengths units.
Understanding and probing phase transitions in non-equilibrium systems is an ongoing challenge physics. A particular instance are that occur between a non-fluctuating absorbing phase, e.g., extinct population, one which the relevant order parameter, such as population density, assumes finite value. Here we report observation of signatures transition open driven quantum system. In our experiment rubidium atoms quasi one-dimensional cold disordered gas laser-excited to Rydberg states under...
Recent work has shown that the synchronization process in lattices of self-sustained (phase and limit-cycle) oscillators displays universal scale-invariant behavior previously studied physics surface kinetic roughening. The type dynamic scaling ansatz which is verified depends on randomness occurs system, whether it columnar disorder (quenched noise given by random assignment natural frequencies), leading to anomalous scaling, or else time-dependent noise, inducing more standard...
This paper: (1) Gives a general argument why research on nonlinear science in and chaos particular is important economics finance. (2) Puts forth two definitions of stochastic nonlinearity (IID-Linearity MDS- Linearity) for time series analysis argues their usefulness as organizing con- cepts not only discussion testing but also building new class struc- tural asset pricing models. (3) Shows how to use ideas from interacting particle systems theory build structural models that turn...
We report on a generic procedure to steer (target) network's dynamics towards given, desired evolution. The problem is here tackled through Master Stability Function approach, assessing the stability of aimed dynamics, and selection nodes be targeted. show that degree node crucial element in this process, targeting mechanism most effective heterogeneous scale-free architectures. This makes proposed approach applicable large majority natural man-made networked systems.
The existence of a static lengthscale that grows in accordance with the dramatic slowing down observed at glass transition is subject intense interest. A recent publication compared two proposals for this length scale, one based on point-to-set correlation technique and other scale where lowest eigenvalue Hessian matrix becomes sensitive to disorder. conclusion was both approaches lead same lengthscale, but former easier measure higher temperatures latter lower temperatures. But even after...
The synchronization of oscillator ensembles is pervasive throughout nonlinear science, from classical or quantum mechanics to biology, human assemblies. Traditionally, the main focus has been identification threshold parameter values for transition as well nature such transition. Here, we show that considering an lattice a discrete growing interface provides unique insights into dynamical process whereby reaches long times. Working on generalization Kuramoto model allows odd non-odd...
We demonstrate the existence of generalized synchronization in systems that act as mediators between two dynamical units that, turn, show complete with each other. These are so-called relay systems. Specifically, we analyze Lyapunov spectrum full system to elucidate when and appear. once a critical coupling strength is achieved, emerges be synchronized, at same point, also arises. Next, use nonlinear measures based on distance phase-space neighbors quantify discretized time series. Finally,...
One of the main causes for age-related declines in working memory is a higher vulnerability to retroactive interference due reduced ability suppress irrelevant information. However, underlying neural correlates remain be established. Magnetoencephalography was used investigate differential patterns young and older adults performing an interference-based task with two experimental conditions, interrupting distracting, during successful recognition. Behaviorally, both types significantly...
We propose a methodology to analyze synchronization in an ensemble of diffusively coupled multistable systems. First, we study how two bidirectionally oscillators synchronize and demonstrate the high complexity basins attraction coexisting synchronous states. Then, use master stability function (MSF) for systems describe synchronizability, even during intermittent behavior, network oscillators, regardless both number interaction structure. In particular, show that elements is synchronizable...
Synchronization processes in populations of identical networked oscillators are the focus intense studies physical, biological, technological, and social systems. Here we analyze stability synchronization a network coupled through different variables. Under assumption an equal topology connections for all variables, master function formalism allows assessing quantifying properties manifold when coupling is transferred from one variable to another. We report on existence optimal transference...
The time-dependent process whereby one-dimensional systems of self-sustained oscillators synchronize is shown to display scale invariance in space and time, akin that found the dynamics equilibrium critical phenomena. Remarkably, largely independent system details, sharing with a class nonequilibrium surface kinetic roughening universal scaling behavior Kardar-Parisi-Zhang equation columnar noise, featuring phase fluctuations follow Tracy-Widom probability distribution. This revealed by...
We explore the nonequilibrium evolution and stationary states of an open many-body system that displays epidemic spreading dynamics in a classical quantum regime. Our study is motivated by recent experiments conducted strongly interacting gases highly excited Rydberg atoms where facilitated excitation competes with radiative decay. These systems approximately implement versions models for population or disease species can be healthy, infected immune state. show two-dimensional lattice,...
The current evidence indicates that the severity of coronavirus disease 2019 (COVID-19) is lower in pediatric population but local data are still limited. Objective: To characterize clinical and epidemiological aspects COVID-19 infection patients younger than 18 years Argentina.Cross-sectional, observational, analytical study confirmed aged 0-18 seen between March 2020 2021 at 19 referral children's hospitals Argentina. A multivariate analysis was done to identify predictors severe cases.A...
The physics of highly excited Rydberg atoms is governed by blockade or exclusion interactions that hinder the excitation in proximity a previously one. This leads to cooperative effects and relaxation dynamics displaying space-time heterogeneity similar what observed glass-forming systems. Here we establish theoretically existence glassy dynamical regime an open gas, associated with phase coexistence at first-order transition large deviation functions. occurs between active low density which...