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In this work we revisit the nonmonotonic behavior (NMB) of synchronization time with velocity reported for systems of mobile pulse-coupled oscillators (PCOs). We devise a control parameter that allows us to predict in which range of…

适应与自组织系统 · 物理学 2018-01-15 Albert Beardo , Luce Prignano , Oleguer Sagarra , Albert Diaz-Guilera

Random fluctuations can lead to cooperative effects in complex systems. We here report the experimental observation of noise-induced quantum synchronization in a chain of superconducting transmon qubits with nearest-neighbor interactions.…

Neuromorphic computing, inspired by the brain's parallel and energy-efficient processing, offers a transformative approach to artificial intelligence. In this study, we fabricated optimized spin-transfer torque nano-oscillators (STNOs) and…

In addition to thermal noise, which is essential to promote conformational transitions in biopolymers, cellular environment is replete with a spectrum of athermal fluctuations that are produced from a plethora of active processes. To…

生物物理 · 物理学 2015-06-11 Won Kyu Kim , Changbong Hyeon , Wokyung Sung

We take into account the influence of extracellular signalling on neurite elongation in a model of neurite growth mediated by building proteins (e.g. tubulin). Tubulin production dynamics was supplied by a function describing the influence…

细胞行为 · 定量生物学 2013-11-20 Vasily Mironov , Alexander Romanov , Alexander Simonov , Maria Vedunova , Victor Kazantsev

We report theory, measurements and numerical simulations on nonlinear piezoelectric ultrasonic devices with stable limit cycles. The devices are shown to exhibit behavior familiar from the theory of coupled auto-oscillators. Frequency of…

经典物理 · 物理学 2007-05-23 Richard L Weaver , Oleg I Lobkis , Alexey Yamilov

This study investigates the interplay between a high-frequency external forcing and the intrinsic dynamics of a quantum nonlinear parametric oscillator. To analyze this system, classical equations of motion of the averages of quantum…

混沌动力学 · 物理学 2025-05-05 Somnath Roy , Chitrak Bhadra , Dhrubajyoti Biswas

After decades of study, there are only two known mechanisms to induce global synchronization in a population of oscillators: deterministic coupling and common forcing. The inclusion of independent random forcing in these models typically…

适应与自组织系统 · 物理学 2023-03-31 Jeremy Worsfold , Tim Rogers

We design, characterize, and couple Boolean phase oscillators that include state-dependent feedback delay. The state-dependent delay allows us to realize an adjustable coupling strength, even though only Boolean signals are exchanged.…

适应与自组织系统 · 物理学 2014-04-11 David P. Rosin , Damien Rontani , Daniel J. Gauthier

Oscillations represent a ubiquitous phenomenon in biological systems. The conventional models of biological periodic oscillations are usually proposed as interconnecting transcriptional feedback loops. Some specific proteins function as…

斑图形成与孤子 · 物理学 2013-05-29 Yue Ma , Kenichi Yoshikawa

Many active systems display nematic order, while interacting with their environment. In this work, we show theoretically how environment-stored memory acts an effective external field that aligns active nematics. The coupling to the…

软凝聚态物质 · 物理学 2024-11-05 Ram M. Adar , Jean-François Joanny

Gene regulatory networks must relay information from extracellular signals to downstream genes in an efficient, timely and coherent manner. Many complex functional tasks such as the immune response require system-wide broadcasting of…

分子网络 · 定量生物学 2019-03-11 Zhipeng Wang , Davit A Potoyan , Peter G Wolynes

The adaptive immune system responds to foreign invaders by activating T cells. However, this response is perilous if T cells are activated by the wrong signal or if they remain activated unduly long after the threat has been eliminated. It…

种群与进化 · 定量生物学 2017-12-04 Gershom Buri , Girma Mesfin Zelleke , Wilfred Ndifon

Lattice degrees of freedom (DoFs) may induce quantum disorder (QD) when nuclear tunneling outvies long-range order, but conventional phonon theory is incapable of describing such QD phases. Here we develop a method based on path-integral…

其他凝聚态物理 · 物理学 2025-08-05 Yu-Cheng Zhu , Jia-Xi Zeng , Qi-Jun Ye , Xin-Zheng Li

We propose a new mean-field model of brain rhythms governed by astrocytes. This theoretical framework describes how astrocytes can regulate neuronal activity and contribute to the generation of brain rhythms. The model describes at the…

神经元与认知 · 定量生物学 2024-05-07 Sergey V. Stasenko , Sergey M. Olenin , Eugene A. Grines , Tatiana A. Levanova

Multiplicative noise is found to divide the growth law of tumors into two parts in a logistic model, which is driven by additive and multiplicative noises simultaneously. The Fokker-Planck equation was also derived to explain the fact that…

生物物理 · 物理学 2007-05-23 Wei-Rong Zhong , Yuan-Zhi Shao , Zhen-Hui He

We study the regime of anticipated synchronization in unidirectionally coupled model neurons subject to a common external aperiodic forcing that makes their behavior unpredictable. We show numerically and by implementation in analog…

凝聚态物理 · 物理学 2009-11-07 M. Ciszak , O. Calvo , C. Masoller , Claudio R. Mirasso , Raul Toral

We present an analytical framework to study the escape rate from a metastable state under the influence of two external multiplicative cross-correlated noise processes. Starting from a phenomenological stationary Langevin description with…

软凝聚态物质 · 物理学 2008-04-17 Jyotipratim Ray Chaudhuri , Sudip Chattopadhyay , Suman Kumar Banik

A universal mechanism of emergence of synchronized low frequency brain wave field activity is presented as a result of nonlinear coupling with flat frequency neuronal forcing. The mechanism utilizes a unique dispersion properties of…

生物物理 · 物理学 2019-06-25 Vitaly L. Galinsky , Lawrence R. Frank

We show that when cells communicate by contact-mediated interactions, heterogeneity in cell shapes and sizes leads to qualitatively distinct collective behavior in the tissue. For inter-cellular coupling that implements lateral inhibition,…

组织与器官 · 定量生物学 2023-01-10 Chandrashekar Kuyyamudi , Shakti N. Menon , Sitabhra Sinha