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We study a simple model of spin network evolution motivated by the hypothesis that the emergence of classical space-time from a discrete microscopic dynamics may be a self-organized critical process. Self organized critical systems are…

高能物理 - 理论 · 物理学 2008-11-26 Mohammad H. Ansari , Lee Smolin

In quantum gravity, we study the evolution of a two-dimensional planar open frozen spin network, in which the color (i.e. the twice spin of an edge) labeling edge changes but the underlying graph remains fixed. The mainly considered…

广义相对论与量子宇宙学 · 物理学 2009-01-06 Jian-Zhen Chen , Jian-Yang Zhu

We propose a dynamical model in which a network structure evolves in a self-organized critical (SOC) manner and explain a possible origin of the emergence of fractal and small-world networks. Our model combines a network growth and its…

物理与社会 · 物理学 2015-07-22 Akitomo Watanabe , Shogo Mizutaka , Kousuke Yakubo

Self-organized criticality (SOC) refers to the ability of complex systems to evolve towards a 2nd-order phase transition at which interactions between system components lead to scale-invariant events beneficial for system performance. For…

神经元与认知 · 定量生物学 2021-05-18 Dietmar Plenz , Tiago L. Ribeiro , Stephanie R. Miller , Patrick A. Kells , Ali Vakili , Elliott L. Capek

Recent experiments with strongly interacting, driven Rydberg ensembles have introduced a promising setup for the study of self-organized criticality (SOC) in cold atom systems. Based on this setup, we theoretically propose a control…

量子气体 · 物理学 2019-05-27 Kai Klocke , Michael Buchhold

The notion of Self-organized criticality (SOC) had been conceived to interpret the spontaneous emergence of long range correlations in nature. Since then many different models had been introduced to study SOC. All of them have few common…

统计力学 · 物理学 2023-05-03 S. S. Manna

We develop a statistical analytical model that predicts the occurrence frequency distributions and parameter correlations of avalanches in nonlinear dissipative systems in the state of a slowly-driven self-organized criticality (SOC)…

太阳与恒星天体物理 · 物理学 2015-06-03 Markus J. Aschwanden

The notions of self-organised criticality (SOC) and turbulence are traditionally considered to be applicable to disjoint classes of phenomena. Nevertheless, scale-free burst statistics is a feature shared by turbulent as well as…

等离子体物理 · 物理学 2009-11-13 Kristoffer Rypdal , Boris Kozelov , Svetlana Ratynskaia , Boris Klumov , Christina Knapek

We employ the eigen microstate approach to explore the self-organized criticality (SOC) in two celebrated sandpile models, namely, the BTW model and the Manna model. In both models, phase transitions from the absorbing-state to the critical…

物理与社会 · 物理学 2024-01-02 Yongwen Zhang , Maoxin Liu , Gaoke Hu , Teng Liu , Xiaosong Chen

Although the paradigm of criticality is centred around spatial correlations and their anomalous scaling, not many studies of Self-Organised Criticality (SOC) focus on spatial correlations. Often, integrated observables, such as avalanche…

统计力学 · 物理学 2017-08-01 Gary Willis , Gunnar Pruessner

A new cellular automaton (CA) model is presented for the self-organized criticality (SOC) in recurrent bursts of soft gamma repeaters (SGRs), which are interpreted as avalanches of reconnection in the magnetosphere of neutron stars. The…

高能天体物理现象 · 物理学 2014-08-25 Ken'ichiro Nakazato

Recognising changes in collective dynamics in complex systems is essential for predicting potential events and their development. Possessing intrinsic attractors with laws associated with scale invariance, self-organised critical dynamics…

统计力学 · 物理学 2024-03-26 Bosiljka Tadic , Alexander Shapoval , Mikhail Shnirman

A mean-field sandpile model that exhibits self-organized criticality (SOC) despite violation of the grain-transfer conservation law during avalanches is proposed. The sandpile consists of $N$ agents and possesses background activity with…

适应与自组织系统 · 物理学 2007-05-23 Dranreb Earl Juanico

It is a common belief that power-law distributed avalanches are inherently unpredictable. This idea affects phenomena as diverse as evolution, earthquakes, superconducting vortices, stock markets, etc; from atomic to social scales. It…

无序系统与神经网络 · 物理学 2009-11-13 O. Ramos , E. Altshuler , K. J. Maloy

In this paper, a simple dynamical model in which fractal networks are formed by self-organized critical (SOC) dynamics is proposed; the proposed model consists of growth and collapse processes. It has been shown that SOC dynamics are…

物理与社会 · 物理学 2019-01-18 Shogo Mizutaka

A self-organising model is proposed to explain the criticality in cortical networks deduced from recent observations of neuronal avalanches. Prevailing understanding of self-organised criticality (SOC) dictates that conservation of energy…

适应与自组织系统 · 物理学 2007-05-23 Dranreb Earl Juanico

The concept of "self-organized criticality" (SOC) has been introduced by Bak, Tang, and Wiesenfeld (1987) to describe the statistics of avalanches on the surface of a sandpile with a critical slope, which produces a scale-free powerlaw size…

太阳与恒星天体物理 · 物理学 2010-03-02 Markus J. Aschwanden

Power laws in nature are considered to be signatures of complexity. The theory of self-organized criticality (SOC) was proposed to explain their origins. A longstanding principle of SOC is the \emph{separation of timescales} axiom. It…

神经元与认知 · 定量生物学 2019-07-03 Anirban Das , Anna Levina

Large scale organization in ensembles of events of atmospheric convection can be generated by the combined effect of forcing and of the interaction between the raising plumes and the environment. Here the "large scale" refers to the space…

大气与海洋物理 · 物理学 2014-04-18 F. Spineanu , M. Vlad , D. Palade

Networks of stochastic spiking neurons are interesting models in the area of Theoretical Neuroscience, presenting both continuous and discontinuous phase transitions. Here we study fully connected networks analytically, numerically and by…

适应与自组织系统 · 物理学 2017-10-16 Ariadne A. Costa , Ludmila Brochini , Osame Kinouchi
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