77 citations · 241 across the 13 of their papers we have counts for
13 papers
Coherent Bose-Einstein condensation with fluctuating density
L. Salasnich, A. Crisanti, A. Sarracino +1
Bose-Einstein condensation in the grand canonical ensemble admits a formulation in terms of a phase-density decomposition of the condensate mode operator . In the pr…
Bose-Einstein Condensation, Fluctuations and Spontaneous Symmetry Breaking
A. Crisanti, A. Sarracino, M. Zannetti
The realisation of Bose-Einstein condensation under grand-canonical conditions has provided the experimental evidence for the simultaneous occurrence of macroscopic fluctuations an…
Canonical vs. Grand Canonical Ensemble for Bosonic Gases under Harmonic Confinement
Andrea Crisanti, Luca Salasnich, Alessandro Sarracino +1
We analyze the general relation between canonical and grand canonical ensembles in the thermodynamic limit. We begin our discussion by deriving, with an alternative approach, some…
Diffusion Properties of a Brownian Ratchet with Coulomb Friction
Massimiliano Semeraro, Giuseppe Gonnella, Eugenio Lippiello +1
The motion of a Brownian particle in the presence of Coulomb friction and an asymmetric spatial potential was evaluated in this study. The system exhibits a ratchet effect, i.e., a…
Condensation vs Ordering: From the Spherical Models to BEC in the Canonical and Grand Canonical Ensemble
A. Crisanti, A. Sarracino, M. Zannetti
In this paper we take a fresh look at the long standing issue of the nature of macroscopic density fluctuations in the grand canonical treatment of the Bose-Einstein condensation (…
Probability distributions with singularities
Federico Corberi, Alessandro Sarracino
In this paper we review some general properties of probability distributions which exibit a singular behavior. After introducing the matter with several examples based on various m…
Induced and endogenous acoustic oscillations in granular faults
L. de Arcangelis, E. Lippiello, M. Pica Ciamarra +1
The frictional properties of disordered systems are affected by external perturbations. These perturbations usually weaken the system by reducing the macroscopic friction coefficie…
Heat fluctuations of Brownian oscillators in nonstationary processes: fluctuation theorem and condensation transition
A. Crisanti, A. Sarracino, M. Zannetti
We study analytically the probability distribution of the heat released by an ensemble of harmonic oscillators to the thermal bath, in the nonequilibrium relaxation process followi…
Nonequilibrium fluctuation-dissipation theorem and heat production
E. Lippiello, M. Baiesi, A. Sarracino
We use a relationship between response and correlation function in nonequilibrium systems to establish a connection between the heat production and the deviations from the equilibr…
Fluctuations of two-time quantities and non-linear response functions
Federico Corberi, Eugenio Lippiello, Alessandro Sarracino +1
We study the fluctuations of the autocorrelation and autoresponse functions and, in particular, their variances and co-variance. In a first general part of the Article, we show the…
Identification of the critical temperature from non-equilibrium time-dependent quantities
Eugenio Lippiello, Alessandro Sarracino
We present a new procedure able to identify and measure the critical temperature. This method is based on the divergence of the relaxation time approaching the critical point in qu…
Fluctuation-dissipation relations and field-free algorithms for the computation of response functions
Federico Corberi, Eugenio Lippiello, Alessandro Sarracino +1
We discuss the relation between the fluctuation-dissipation relation derived by Chatelain and Ricci-Tersenghi [C.Chatelain, J.Phys. A {\bf 36}, 10739 (2003); F. Ricci-Tersenghi, Ph…
Nonlinear response and fluctuation dissipation relations
Eugenio Lippiello, Federico Corberi, Alessandro Sarracino +1
A unified derivation of the off equilibrium fluctuation dissipation relations (FDR) is given for Ising and continous spins to arbitrary order, within the framework of Markovian sto…