Zobrazeno 1 - 10
of 37
pro vyhledávání: '"Defaveri, Lucianno"'
We investigate a system of Brownian particles weakly bound by attractive parity-symmetric potentials that grow at large distances as $V(x) \sim |x|^\alpha$, with $0 < \alpha < 1$. The probability density function $P(x,t)$ at long times reaches the Bo
Externí odkaz:
http://arxiv.org/abs/2407.16598
Stretched-exponential relaxation is a widely observed phenomenon found in ordered ferromagnets as well as glassy systems. One modeling approach connects this behavior to a droplet dynamics described by an effective Langevin equation for the droplet r
Externí odkaz:
http://arxiv.org/abs/2309.13126
Autor:
Defaveri, Lucianno, Santos, Maike A. F. dos, Kessler, David A., Barkai, Eli, Anteneodo, Celia
Publikováno v:
Phys. Rev. E 108, 024133 (2023)
We study non-normalizable quasi-equilibrium states (NNQE) arising from anomalous diffusion. Initially, particles in contact with a thermal bath are released from an asymptotically flat potential well, with dynamics that is described by fractional cal
Externí odkaz:
http://arxiv.org/abs/2304.08834
We study the motion of an overdamped particle connected to a thermal heat bath in the presence of an external periodic potential in one dimension. When we coarse-grain, i.e., bin the particle positions using bin sizes that are larger than the periodi
Externí odkaz:
http://arxiv.org/abs/2210.10935
We consider a system formed by two different segments of particles, coupled to thermal baths, one at each end, modeled by Langevin thermostats. The particles in each segment interact harmonically and are subject to an on-site potential, for which, th
Externí odkaz:
http://arxiv.org/abs/2209.05610
In the derivation of the thermodynamics of overdamped systems, one ignores the kinetic energy contribution, since the velocity is a slow variable. In this paper, we show that the kinetic energy needs to be present in the calculation of the heat distr
Externí odkaz:
http://arxiv.org/abs/2201.05141
By considering an explicit nonequilibrium model, we analyze the statistics of the irreversible work, $w_{\rm irr}$, and irreversible entropy production, $\Delta_i s$, within the stochastic energetics framework. Restating the second law of thermodynam
Externí odkaz:
http://arxiv.org/abs/2201.04261
Autor:
Defaveri, Lucianno, Anteneodo, Celia
Publikováno v:
Phys. Rev. E 104, 014106 (2021)
We consider a system consisting of two interacting classical particles, each one subject to an on-site potential and to a Langevin thermal bath. We analytically calculate the heat current that can be established through the system when the bath tempe
Externí odkaz:
http://arxiv.org/abs/2105.01849
Publikováno v:
Entropy 2021, 23(2), 131
We investigate the overdamped Langevin motion for particles in a potential well that is asymptotically flat. When the potential well is deep compared to temperature, physical observables like the mean square displacement are essentially time-independ
Externí odkaz:
http://arxiv.org/abs/2101.00261
Publikováno v:
Phys. Rev. Research 2, 043088 (2020)
We consider an overdamped Brownian particle subject to an asymptotically flat potential with a trap of depth $U_0$ around the origin. When the temperature is small compared to the trap depth ($\xi=k_B T/U_0 \ll 1$), there exists a range of timescales
Externí odkaz:
http://arxiv.org/abs/2004.04325