23 papers · ranked by Valyu relevance
Ayushi Saxena, Sangeeta Rani Ujjwal, Ram Ramaswamy
Local repulsive coupling tend to a desynchronize ensembles of globally coupled oscillators, but when the repulsive coupling is nonlocal, multi-cluster chimeras can result. In this case, several groups of synchronized oscillators (the so-called clusters) are formed, and these coexist with a set of desynchronized…
Harjo J. de Poel
Coupled oscillators provide a pertinent model approach to study between-person movement dynamics. While ample literature in this respect has considered the influence of external/environmental constraints and/or effects of a difference between the two agents' individual component dynamics (e.g., mismatch in natural…
Yuta Kitaguchi, Satoru Komori, Hajime Tei, Koichiro Uriu
The mammalian circadian pacemaker, suprachiasmatic nucleus (SCN), comprises a core region that receives light signals from the retina and a shell region that outputs pacemaking rhythms to peripheral tissues. The free-running period (FRP) of animals in constant darkness (DD) correlates with the period of the preceding…
Chittaranjan Hens, O. I. Olusola, Pinaki Pal, Syamal K. Dana
A death of oscillation is reported in a network of coupled synchronized oscillators in presence of additional repulsive coupling. The repulsive link evolves as an averaging effect of mutual interaction between two neighboring oscillators due to a local fault and the number of repulsive links grows in time when the…
Soumen Majhi, Sayantan Nag Chowdhury, Dibakar Ghosh
- Emerging collective behavior in complex dynamical networks depends on both coupling function and underlying coupling topology. Through this perspective, we provide a brief yet profound excerpt of recent research efforts that explore how the synergy of attractive and repulsive interactions influence the destiny of…
Simin Mirzaei, Md Sayeed Anwar, Fatemeh Parastesh, Sajad Jafari + 1 more
'Dibakar Ghosh'] A long-standing expectation is that two repulsively coupled oscillators tend to oscillate in opposite directions. It has been difficult to achieve complete synchrony in coupled identical oscillators with purely repulsive coupling. Here, we introduce a general coupling condition based on the linear…
K. Sathiyadevi, S. Karthiga, V. K. Chandrasekar, D. V. Senthilkumar + 1 more
'M. Lakshmanan'] Spontaneous symmetry breaking (SSB) is an important phenomenon observed in various fields including physics and biology. In this connection, we here show that the trade-off between attractive and repulsive couplings can induce spontaneous symmetry breaking in a homogeneous system of coupled…
George Vathakkattil Joseph, Vikram Pakrashi
Anti-phase synchronization is the spontaneous formation of 2 clusters of oscillators synchronized between themselves within a cluster but opposite in phase with the other cluster. Neuronal networks in human and animal brains, ecological networks, climactic networks, and lasers are all systems that exhibit anti-phase…
Zejing Huang, Huabiao Zhang, Yang Yang, Lijuan Zhang + 4 more
Magnetic nonlinearity and multi-oscillator coupling are commonly employed to improve the performance of energy harvesters. This study integrates both mechanisms to propose a nested dual-oscillator coupled piezoelectric energy harvester with an external magnet, investigating both repulsive and attractive interactions…
Hiroki Sakuta, Yuki Kanakubo, Sakura Takada, Naoya Yanagisawa + 5 more
Intracellular molecular organization is often explained by attractive interactions driving clustering and phase separation. Although consideration of repulsive forces is essential in physics, their roles remain unclear in cellular contexts. Here, we demonstrated the fundamental role of repulsion in regulating protein…
Aroaldo S. Santos, Pedro H. Pereira, Patrícia P. Abrantes, Carlos Farina + 4 more
'Carlos Farina' 'Paulo A. Maia Neto' 'Reinaldo de Melo e Souza' 'Fernando C. Lombardo' 'Paula I. Villar'] In this paper, we present a systematic approach to building useful time-dependent effective Hamiltonians in molecular quantum electrodynamics. The method is based on considering part of the system as an open…
Orion Ciftja, Cleo L. Bentley Jr., Sotirios Baskoutas
We study the planar dynamics of a charged particle subjected to a radially repulsive inverted harmonic potential and a perpendicular uniform magnetic field, a configuration that is relevant to nanoscale-charged transport and confinement in low-dimensional systems. The competition between the destabilizing central…
Changqing Sun, Yong Zhou
Hydration of organic molecules determines the fascinating properties of aqueous solutions with challenges for understanding the bonding and electronic dynamics. We found three types of unusual interactions in terms of the O/C−H:O coupling hydrogen bonds, the charge-inverted H:O-C and H:O=S, and the HH repulsion bridged…
Changqing Sun
Being essential to life on earth, the hydrogen bond and its configuration, performance, and functionality become increasingly inspiring. We humbly share a three-body coupling X:R-Y system involving a pair of retractable and polarizable Z-X and R-Y dipoles. The (:) is the negative polar end of a dipole. The X:R-Y bond…
J.M. Barandiarán, M. Rivas
The spinning electron-electron interaction is described in classical terms by means of two possible classical interactions: The instantaneous Coulomb interaction between the charge centers of both particles and the Poincar´e invariant interaction developed in a previous work. The numerical integrations are performed…
Mohsen Farshad
Information and force definition has been intertwined with the concept of entropy for many years. The information for displacement of degrees of freedom with Brownian motions at a given temperature in space emerges as an entropic force between species. Here, we use this concept of entropy to understand the underlying…
Akshay Krishna Ammothum Kandy, Eddie Wadbro, Bálint Aradi, Peter Broqvist + 1 more
Parametrization Authors: ['Akshay\nKrishna Ammothum Kandy' 'Eddie Wadbro' 'Bálint Aradi' 'Peter Broqvist' 'Jolla Kullgren'] The Curvature Constrained Splines (CCS) methodology has been used for fitting repulsive potentials to be used in SCC-DFTB calculations. The benefit of using CCS is that the actual fitting of the…
Raymond Walsh
The Coulomb barrier occurs at the quantum interface between the strong and the electromagnetic fundamental forces. Overcoming the Coulomb barrier is the central goal of nuclear fusion, and an effective model of the barrier can only accelerate the achievement of this potential source of clean and abundant energy. A…
Helmut H. Strey, Rajat Kumar, Lilianne Mujica-Parodi
In this article, we develop a Maximum likelihood (ML) approach to estimate parameters from correlated time traces that originate from coupled Ornstein-Uhlenbeck processes. The most common technique to characterize the correlation between time-series is to calculate the Pearson correlation coefficient. Here we show that…
Xiao-Wei Qiang, Chen Zhang, Hai-Long Dong, Fu-Jia Tian + 5 more
The functions of DNA and RNA rely on their deformations. When stretched, both DNA and RNA duplexes change their twist angles through twist-stretch coupling. The coupling is negative for DNA but positive for RNA, which is not yet completely understood. Here, our magnetic tweezers experiments show that the coupling of…
Fangzhou Xiao, Meichen Fang, Jiawei Yan, John C. Doyle
Noise is intrinsic to many important regulatory processes in living cells, and often forms obstacles to be overcome for reliable biological functions. However, due to stochastic birth and death events of all components in biomolecular systems, suppression of noise of one component by another is fundamentally hard and…
Felix Stete, Wouter Koopman, Carsten Henkel, Oliver Benson + 2 more
Light--matter coupling in plasmonic nanocavities has been widely studied in the past years. Yet, for core--shell particles, popular electromagnetic models that use the classical Lorentz oscillator to describe the shell predict extinction spectra with three maxima, if the plasmon and the shell absorption are in…
Mohamed Swailem, Ken A. Dill
What drove nucleic acids (NA) to associate with proteins (PR) at the Origins of Life? We reason from polymer physics and the Central Dogma (CD) that the fitness value of cooperating through a division of labor – NA for replication fidelity and PR for functional fitness – is much higher than for either polymer alone.…