Zobrazeno 1 - 10
of 76
pro vyhledávání: '"Solon, Alexandre P."'
Autor:
Chaté, Hugues, Solon, Alexandre
We propose a hydrodynamic description of the homogeneous ordered phase of polar flocks. Starting from symmetry principles, we construct the appropriate equation for the dynamics of the Goldstone mode associated with the broken rotational symmetry. We
Externí odkaz:
http://arxiv.org/abs/2403.03804
Autor:
Bertin, Eric, Solon, Alexandre
We propose a one-dimensional model of active particles interpolating between quorum sensing models used in the study of motility-induced phase separation (MIPS) and models of congestion of traffic flow on a single-lane highway. Particles have a targe
Externí odkaz:
http://arxiv.org/abs/2312.13963
Active systems are driven out of equilibrium by exchanging energy and momentum with their environment. This endows them with anomalous mechanical properties that we review in this colloquium for the case of dry scalar active matter, which has attract
Externí odkaz:
http://arxiv.org/abs/2310.00079
Autor:
Benvegnen, Brieuc, Granek, Omer, Ro, Sunghan, Yaacoby, Ran, Chaté, Hugues, Kafri, Yariv, Mukamel, David, Solon, Alexandre, Tailleur, Julien
Publikováno v:
Phys. Rev. Lett. 131, 218301 (2023)
We study the stability of the ordered phase of flocking models with a scalar order parameter. Using both the active Ising model and a hydrodynamic description, we show that droplets of particles moving in the direction opposite to that of the ordered
Externí odkaz:
http://arxiv.org/abs/2306.01156
Publikováno v:
Phys. Rev. E 106, 054608 (2022)
We study the one-dimensional active Ising model in which aligning particles undergo diffusion biased by the signs of their spins. The phase diagram obtained varying the density of particles, their hopping rate and the temperature controlling the alig
Externí odkaz:
http://arxiv.org/abs/2209.06671
We study numerically the Toner-Tu field theory where the density field is maintained constant, a limit case of "Malthusian" flocks for which the asymptotic scaling of correlation functions in the ordered phase is known exactly. While we confirm these
Externí odkaz:
http://arxiv.org/abs/2209.01134
When a physical system evolves in a thermal bath at a constant temperature, it arrives eventually to an equilibrium state whose properties are independent of the kinetic parameters and of the precise evolution scenario. This is generically not the ca
Externí odkaz:
http://arxiv.org/abs/2204.12145
Autor:
Solon, Alexandre, Horowitz, Jordan M.
An active bath, made of self-propelling units, is a nonequilibrium medium in which the Einstein relation $D=\mu k_B T$ between the mobility $\mu$ and the diffusivity $D$ of a tracer particle cannot be expected to hold a priori. We consider here heavy
Externí odkaz:
http://arxiv.org/abs/2203.05459
Publikováno v:
Phys. Rev. Lett. 128, 208004 (2022)
We consider the effect of spatial anisotropy on polar flocks by investigating active $q$-state clock models in two dimensions. In contrast to what happens in equilibrium, we find that, in the large-size limit, any amount of anisotropy changes drastic
Externí odkaz:
http://arxiv.org/abs/2201.00704
Active particles may undergo phase separation when interactions oppose self-propulsion, in the absence of any cohesive forces. The corresponding Motility-Induced Phase Separation (MIPS) is arguably the simplest non-trivial collective feature that dis
Externí odkaz:
http://arxiv.org/abs/2112.03979