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An Absorbing State Model with an Emergent Ising Transition
Shen Ai, Dov Levine, Paul Chaikin
We study a dynamical model of repulsive needles with centers fixed on a square lattice. Needles that overlap are active and receive a repulsive rotation ; needles with…
Dynamical approach to the jamming problem
Sam Wilken, Ashley Z. Guo, Dov Levine +1
A simple dynamical model, Biased Random Organization, BRO, appears to produce configurations known as Random Close Packing (RCP) as BRO's densest critical point in dimension .…
Emergent Synchronization and Flocking in Purely Repulsive Self-Navigating Particles
Mathias Casiulis, Dov Levine
Inspired by groups of animals and robots, we study the collective dynamics of large numbers of active particles, each one trying to get to its own randomly placed target, while avo…
Self-propulsion and self-navigation: Activity is a precursor to jamming
Mathias Casiulis, Daniel Hexner, Dov Levine
Traffic jams are an everyday hindrance to transport, and typically arise when many vehicles have the same or a similar destination. We show, however, that even when uniformly distr…
Vicsek Model by Time-Interlaced Compression: a Dynamical Computable Information Density
Andrea Cavagna, Paul M. Chaikin, Dov Levine +3
Collective behavior, both in real biological systems as well as in theoretical models, often displays a rich combination of different kinds of order. A clear-cut and unique definit…
Correlation lengths in the language of computable information
Stefano Martiniani, Yuval Lemberg, Paul M. Chaikin +1
Computable Information Density (CID), the ratio of the length of a losslessly compressed data file to that of the uncompressed file, is a measure of order and correlation in both e…
Noise, diffusion, and hyperuniformity
Daniel Hexner, Dov Levine
We consider driven many-particle models which have a phase transition between an active and an absorbing phase. Like previously studied models, we have particle conservation, but h…
Silent Flocks
Andrea Cavagna, Irene Giardina, Tomas S. Grigera +4
Experiments find coherent information transfer through biological groups on length and time scales distinctly below those on which asymptotically correct hydrodynamic theories appl…
Hyperuniformity of critical absorbing states
Daniel Hexner, Dov Levine
The properties of the absorbing states of non-equilibrium models belonging to the conserved directed percolation universality class are studied. We find that at the critical point…
Self Organization and Self Avoiding Limit Cycles
Daniel Hexner, Dov Levine
A simple periodically driven system displaying rich behavior is introduced and studied. The system self-organizes into a mosaic of static ordered regions with three possible patter…
Entropic commensurate-incommensurate transition
Nikolai Nikola, Daniel Hexner, Dov Levine
The equilibrium properties of a minimal tiling model are investigated. The model has extensive ground state entropy, with each ground state having a quasiperiodic sequence of rows.…
Characterizing order in amorphous systems
François Sausset, Dov Levine
We measure and compare three correlation lengths proposed to describe the extent of structural order in amorphous systems. In particular, the recently proposed "patch correlation l…
Order in glassy systems
Jorge Kurchan, Dov Levine
A directly measurable correlation length may be defined for systems having a two-step relaxation, based on the geometric properties of density profile that remains after averaging…
Ion transport through confined ion channels in the presence of immobile charges
Punyabrata Pradhan, Yariv Kafri, Dov Levine
We study charge transport in an ionic solution in a confined nanoscale geometry in the presence of an externally applied electric field and immobile background charges. For a range…
Order in extremal trajectories
Khanh-Dang Nguyen Thu Lam, Jorge Kurchan, Dov Levine
Given a chaotic dynamical system and a time interval in which some quantity takes an unusually large average value, what can we say of the trajectory that yields this deviation? As…
Non-equilibrium fluctuation theorems in the presence of local heating
Punyabrata Pradhan, Yariv Kafri, Dov Levine
We study two non-equilibrium work fluctuation theorems, the Crooks' theorem and the Jarzynski equality, for a test system coupled to a spatially extended heat reservoir whose degre…
Isolated Non-Equilibrium Systems in Contact
Yair Shokef, Gal Shulkind, Dov Levine
We investigate a solvable model for energy conserving non-equilibrium steady states. The time-reversal asymmetry of the dynamics leads to the violation of detailed balance and to e…
Energy distribution and effective temperatures in a driven dissipative model
Yair Shokef, Dov Levine
We investigate non-equilibrium behavior of driven dissipative systems, using the model presented in [Phys. Rev. Lett. 93, 240601 (2004)]. We solve the non-Boltzmann steady state en…
Correlation and response in a driven dissipative model
Dana Levanony, Dov Levine
We consider a simple dissipative system with spatial structure in contact with a heat bath. The system always exhibits correlations except in the cases of zero and maximal dissipat…
Fluctuation-dissipation relations in driven dissipative systems
Yair Shokef, Guy Bunin, Dov Levine
Exact theoretical results for the violation of time dependent fluctuation-dissipation relations in driven dissipative systems are presented. The ratio of correlation to delayed res…
An exactly solvable model for driven dissipative systems
Yair Srebro, Dov Levine
We introduce a solvable stochastic model inspired by granular gases for driven dissipative systems. We characterize far from equilibrium steady states of such systems through the n…
The Role of Friction in Compaction and Segregation of Granular Materials
Yair Srebro, Dov Levine
We investigate the role of friction in compaction and segregation of granular materials by combining Edwards' thermodynamic hypothesis with a simple mechanical model and mean-field…
Granular 'glass' transition
L. E. Silbert, D. Ertas, G. S. Grest +2
The transition from a flowing to a static state in a granular material is studied using large-scale, 3D particle simulations. Similar to glasses, this transition is manifested in t…
Granular flow down an inclined plane: Bagnold scaling and rheology
L. E. Silbert, D. Ertas, G. S. Grest +3
We have performed a systematic, large-scale simulation study of granular media in two- and three-dimensions, investigating the rheology of cohesionless granular particles in inclin…