56 citations · 140 across the 7 of their papers we have counts for
7 papers
Fourier's Law in a Generalized Piston Model
Lorenzo Caprini, Luca Cerino, Alessandro Sarracino +1
A simplified, but non trivial, mechanical model -- gas of particles of mass in a box partitioned by mobile adiabatic walls of mass -- interacting with two thermal b…
Linear and non-linear thermodynamics of a kinetic heat engine with fast transformations
Luca Cerino, Andrea Puglisi, Angelo Vulpiani
We investigate a kinetic heat engine model constituted by particles enclosed in a box where one side acts as a thermostat and the opposite side is a piston exerting a given pressur…
Consistent description of fluctuations requires negative temperatures
Luca Cerino, Andrea Puglisi, Angelo Vulpiani
We review two definitions of temperature in statistical mechanics, and , corresponding to two possible definitions of entropy, and , known as surface and volu…
The role of the number of degrees of freedom and chaos in macroscopic irreversibility
Luca Cerino, Fabio Cecconi, Massimo Cencini +1
This article aims at revisiting, with the aid of simple and neat numerical examples, some of the basic features of macroscopic irreversibility, and, thus, of the mechanical foundat…
Entropy production for velocity-dependent macroscopic forces: the problem of dissipation without fluctuations
Luca Cerino, Andrea Puglisi
In macroscopic systems, velocity-dependent phenomenological forces are used to model friction, feedback devices or self-propulsion. Such forces usually include a dissipative…
A kinetic model for the finite-time thermodynamics of small heat engines
Luca Cerino, Andrea Puglisi, Angelo Vulpiani
We study a molecular engine constituted by a gas of molecules enclosed between a massive piston and a thermostat. The force acting on the piston and the temperature o…
Fluctuations in partitioning systems with few degrees of freedom
L. Cerino, G. Gradenigo, A. Sarracino +2
We study the behavior of a moving wall in contact with a particle gas and subjected to an external force. We compare the fluctuations of the system observed in the microcanonical a…