Zobrazeno 1 - 10
of 815
pro vyhledávání: '"Olla P."'
Autor:
Olla, Piero
The behavior of lattice models in which time reversibility is enforced at the level of trajectories (microscopic reversibility) is studied analytically. Conditions for ergodicity breaking are explored, and a few examples of systems characterized by a
Externí odkaz:
http://arxiv.org/abs/2409.00430
We prove the hydrodynamic limit for a one-dimensional harmonic chain of interacting atoms with a random flip of the momentum sign. The system is open: at the left boundary it is attached to a heat bath at temperature $T_-$, while at the right endpoin
Externí odkaz:
http://arxiv.org/abs/2406.11408
We derive the heat equation for the thermal energy under diffusive space-time scaling for a purely deterministic microscopic dynamics satisfying Newton equations perturbed by an external chaotic force acting like a magnetic field.
Externí odkaz:
http://arxiv.org/abs/2310.13338
We consider a chain consisting of $n+1$ pinned harmonic oscillators subjected on the right to a time dependent periodic force $\cF(t)$ while Langevin thermostats are attached at both endpoints of the chain. We show that for long times the system is d
Externí odkaz:
http://arxiv.org/abs/2307.09535
Autor:
Ferrari, Pablo A., Olla, Stefano
We study the fluctuations in equilibrium for a dynamics of rods with random length. This includes the classical hard rod elastic collisions, when rod lengths are constant and equal to a positive value. We prove that in the diffusive space-time scalin
Externí odkaz:
http://arxiv.org/abs/2305.13037
We consider the macroscopic limit for the space-time density fluctuations in the open symmetric simple exclusion in the quasi-static scaling limit. We prove that the distribution of these fluctuations converge to a gaussian space-time field that is d
Externí odkaz:
http://arxiv.org/abs/2305.05319
Autor:
Olla, Piero
Publikováno v:
Phys. Rev. E 107, L062104 (2023)
Translation-invariant low-dimensional systems are known to exhibit anomalous heat transport. However, there are systems, such as the coupled-rotor chain, where translation invariance is satisfied, yet transport remains diffusive. It has been argued t
Externí odkaz:
http://arxiv.org/abs/2302.04561
Autor:
Rita Serra, Vincenzo Rallo, Maristella Steri, Stefania Olla, Maria Grazia Piras, Michele Marongiu, Myriam Gorospe, David Schlessinger, Antonio Pinna, Edoardo Fiorillo, Francesco Cucca, Andrea Angius
Publikováno v:
BMC Ophthalmology, Vol 24, Iss 1, Pp 1-9 (2024)
Abstract Background Usher syndrome (USH) encompasses a group of disorders characterized by congenital sensorineural hearing loss (SNHL) and retinitis pigmentosa (RP). We described the clinical findings, natural history, and molecular analyses of USH
Externí odkaz:
https://doaj.org/article/4b4dde0c7d4e4c11911ccdfe6bc78aa8
We summarize and extend some of the results obtained recently for the microscopic and macroscopic behavior of a pinned harmonic chain, with random velocity flips at Poissonian times, acted on by a periodic force {at one end} and in contact with a hea
Externí odkaz:
http://arxiv.org/abs/2212.00093
Autor:
Olla, Stefano, Ferrari, Pablo
We examine the behaviour of density fluctuation in equilibrium under diffusive space-time scaling of a completely integrable dynamics of hard rods with variable length. This is the extended abstract of a talk given by S.Olla at the workshop 'Large St
Externí odkaz:
http://arxiv.org/abs/2210.02079