Zobrazeno 1 - 10
of 77
pro vyhledávání: '"Fodor, Etienne"'
Inspired by dense contractile tissues, where cells are subject to periodic deformation, we formulate and study a generic hydrodynamic theory of pulsating active liquids. Combining mechanical and phenomenological arguments, we postulate that the mecha
Externí odkaz:
http://arxiv.org/abs/2407.19955
We develop a framework describing the dynamics and thermodynamics of open non-ideal reaction-diffusion systems, which embodies Flory-Huggins theories of mixtures and chemical reaction network theories. Our theory elucidates the mechanisms underpinnin
Externí odkaz:
http://arxiv.org/abs/2407.09128
Autor:
Piñeros, William D., Fodor, Étienne
We discover unexpected connections between packing configurations and rare fluctuations in dense systems of active particles subject to pulsation of size. Using large deviation theory, we examine biased ensembles which select atypical realizations of
Externí odkaz:
http://arxiv.org/abs/2403.16961
Publikováno v:
New J. Phys. 26, 063006 (2024)
We introduce a family of lattice-gas models of flocking, whose thermodynamically consistent dynamics admits a proper equilibrium limit at vanishing self-propulsion. These models are amenable to an exact coarse-graining which allows us to study their
Externí odkaz:
http://arxiv.org/abs/2401.09901
Autor:
Manacorda, Alessandro, Fodor, Étienne
We propose a class of diffusive lattice models where the internal states of particles are subject to a periodic drive. The discrete symmetry of states enforces an effective energy landscape which can counteract the drive to arrest the dynamics. Such
Externí odkaz:
http://arxiv.org/abs/2310.14370
Publikováno v:
Phys. Rev. X 14, 011012 (2024)
Active constituents burn fuel to sustain individual motion, giving rise to collective effects that are not seen in systems at thermal equilibrium, such as phase separation with purely repulsive interactions. There is a great potential in harnessing t
Externí odkaz:
http://arxiv.org/abs/2305.11078
Publikováno v:
Phys. Rev. Lett. 131, 138301, 2023
We develop a general classification of the nature of the instabilities yielding spatial organization in open nonideal reaction-diffusion systems, based on linear stability analysis. This encompasses dynamics where chemical species diffuse, interact w
Externí odkaz:
http://arxiv.org/abs/2304.06394
Publikováno v:
EPL 142, 57004 (2023)
In equilibrium, the collective behaviour of particles interacting via steep, short-ranged potentials is well captured by the virial expansion of the free energy at low density. Here, we extend this approach beyond equilibrium to the case of active ma
Externí odkaz:
http://arxiv.org/abs/2301.12155
Autor:
Zhang, Yiwei, Fodor, Étienne
Publikováno v:
Phys. Rev. Lett. 131, 238302 (2023)
We reveal that the mechanical pulsation of locally synchronised particles is a generic route to propagate deformation waves. We consider a model of dense repulsive particles whose activity drives periodic change in size of each individual. The dynami
Externí odkaz:
http://arxiv.org/abs/2208.06831
Publikováno v:
J. Chem. Phys. 157, 014902 (2022)
Active systems, which are driven out of equilibrium by local non-conservative forces, exhibit unique behaviors and structures with potential utility for the design of novel materials. An important and difficult challenge along the path towards this g
Externí odkaz:
http://arxiv.org/abs/2208.03717