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pro vyhledávání: '"Bonilla L"'
The discrete time Vicsek model confined by a harmonic potential explains many aspects of swarm formation in insects. We have found exact solutions of this model without alignment noise in two or three dimensions. They are periodic or quasiperiodic (i
Externí odkaz:
http://arxiv.org/abs/2411.05709
Publikováno v:
Entropy 25, 1644 (2023)
Animal motion and flocking are ubiquitous nonequilibrium phenomena that are often studied within active matter. In examples such as insect swarms, macroscopic quantities exhibit power laws with measurable critical exponents and ideas from phase trans
Externí odkaz:
http://arxiv.org/abs/2311.09135
Publikováno v:
Physical Review E 108, 054407 (2023)
Complex biological processes involve collective behavior of entities (bacteria, cells, animals) over many length and time scales and can be described by discrete models that track individuals or by continuum models involving densities and fields. We
Externí odkaz:
http://arxiv.org/abs/2311.09080
Publikováno v:
Physical Review E 109, 014611 (2024)
Collective biological systems display power laws for macroscopic quantities and are fertile probing grounds for statistical physics. Besides power laws, natural insect swarms present strong scale-free correlations, suggesting closeness to phase trans
Externí odkaz:
http://arxiv.org/abs/2309.05064
Publikováno v:
Physical Review E 108, 024130 (2023)
We theoretically consider a graphene ripple as a Brownian particle coupled to an energy storage circuit. When circuit and particle are at the same temperature, the second law forbids harvesting energy from the thermal motion of the Brownian particle,
Externí odkaz:
http://arxiv.org/abs/2308.09083
The harmonically confined Vicsek model displays qualitative and quantitative features observed in natural insect swarms. It exhibits a scale free transition between single and multicluster chaotic phases. Finite size scaling indicates that this unusu
Externí odkaz:
http://arxiv.org/abs/2305.14085
Publikováno v:
Physical Review E 107, 014209 (2023)
The Vicsek model encompasses the paradigm of active dry matter. Motivated by collective behavior of insects in swarms, we have studied finite size effects and criticality in the three dimensional, harmonically confined Vicsek model. We have discovere
Externí odkaz:
http://arxiv.org/abs/2208.08121
Collective behavior occurs ubiquitously in nature and it plays a key role in bacterial colonies, mammalian cells or flocks of birds. Here, we examine the average density and velocity of self-propelled particles, which are described by a system of par
Externí odkaz:
http://arxiv.org/abs/2203.14238
Publikováno v:
Physical Review E 104, 035303 (2021)
Time periodic patterns in a semiconductor superlattice, relevant to microwave generation, are obtained upon numerical integration of a known set of drift-diffusion equations. The associated spatio-temporal transport mechanisms are uncovered by applyi
Externí odkaz:
http://arxiv.org/abs/2109.14660