63 citations · 707 across the 45 of their papers we have counts for
45 papers
Internal Reliability of Coupled Kuramoto-Sakaguchi Phase Oscillators
Arkady Pikovsky, Franco Bagnoli, Stefano Iubini
The notion of internal reliability in dynamical networks describes whether replicas of a particular unit follow the dynamics of the reference unit. Reliability and anti-reliability…
Thermodynamics of photonic nonlinear Aharonov-Bohm cages
Stefano Iubini, Carlo Danieli
We investigate equilibrium and non-equilibrium thermodynamics of one-dimensional photonic diamond lattices with Kerr nonlinearity. The equilibrium phase diagram is obtained as a fu…
Dephasing-induced relaxation in tight-binding chains with linear and nonlinear defects
Debraj Das, Andrea Gambassi, Stefano Iubini +1
We investigate thermalization in a tight-binding chain with an on-site defect subject to local dephasing noise implemented as random phase kicks. For a single linear defect of stre…
Coherence properties of collective modes in ensembles of oscillators
A. Pikovsky, F. Bagnoli, S. Iubini
Synchronization transition in oscillatory networks manifests itself as the appearance of a periodic global mode. While perfect in the thermodynamic limit, this mode fluctuates for…
Mean-field theory of the DNLS equation at positive and negative absolute temperatures
Michele Giusfredi, Stefano Iubini, Antonio Politi +1
The Discrete Non Linear Schrödinger (DNLS) model, due to the existence of two conserved quantities, displays an equilibrium transition between a homogeneous phase at positive absol…
Infinite-temperature thermostats by energy localization in a nonequilibrium setup
Michele Giusfredi, Stefano Iubini, Antonio Politi +1
Some lattice models having two conservation laws may display an equilibrium phase transition from a homogeneous (positive temperature - PT) to a condensed (negative temperature) ph…
Localization and "classical entanglement'' in the Discrete Non-Linear Schrödinger Equation
Martina Giachello, Stefano Iubini, Roberto Livi +1
We perform a detailed numerical study of the very peculiar thermodynamic properties of the localized high-energy phase of the Discrete Non-Linear Schrödinger Equation (DNLSE). A nu…
Internal reliability and anti-reliability in dynamical networks
Tommaso Matteuzzi, Franco Bagnoli, Michele Baia +2
We consider finite dynamical networks and define internal reliability according to the synchronization properties of a replicated unit or a set of units. If the states of the repli…
Effective grand-canonical description of condensation in negative-temperature regimes
Stefano Iubini, Antonio Politi
The observation of negative-temperature states in the localized phase of the Discrete Nonlinear Schrödinger (DNLS) equation has challenged statistical mechanics for a long time. Fo…
Localization in boundary-driven lattice models
Michele Giusfredi, Stefano Iubini, Paolo Politi
Several systems display an equilibrium condensation transition, where a finite fraction of a conserved quantity is spatially localized. The presence of two conservation laws may in…
Onsager coefficients in a coupled-transport model displaying a condensation transition
Stefano Iubini, Antonio Politi, Paolo Politi
We study nonequilibrium steady states of a one-dimensional stochastic model, originally introduced as an approximation of the Discrete Nonlinear Schrödinger equation. This model is…
Relaxation dynamics and finite-size effects in a simple model of condensation
Gabriele Gotti, Stefano Iubini, Paolo Politi
We consider a simple, purely stochastic model characterized by two conserved quantities (mass density and energy density ) which is known to display a condensation transitio…
Condensation induced by coupled transport processes
Gabriele Gotti, Stefano Iubini, Paolo Politi
Several lattice models display a condensation transition in real space when the density of a suitable order parameter exceeds a critical value. We consider one of such models with…
Frozen dynamics of a breather induced by an adiabatic invariant
Antonio Politi, Paolo Politi, Stefano Iubini
The Discrete Nonlinear Schrödinger (DNLS) equation is a Hamiltonian model displaying an extremely slow relaxation process when discrete breathers appear in the system. In [Iubini S…
Hydrodynamics and transport in the long-range-interacting chain
Stefano Iubini, Stefano Lepri, Stefano Ruffo
We present a simulation study of the one-dimensional lattice theory with long-range interactions decaying as an inverse power of the intersite distance , $σ>0…
The rise and fall of branching: a slowing down mechanism in relaxing wormlike micellar networks
Marco Baiesi, Stefano Iubini, Enzo Orlandini
A mean-field kinetic model suggests that the relaxation dynamics of wormlike micellar networks is a long and complex process due to the problem of reducing the number of free end-c…
Condensation transition and ensemble inequivalence in the Discrete Nonlinear Schrödinger Equation
Giacomo Gradenigo, Stefano Iubini, Roberto Livi +1
The thermodynamics of the discrete nonlinear Schrödinger equation in the vicinity of infinite temperature is explicitly solved in the microcanonical ensemble by means of large-devi…
Statistical Mechanics of Systems with Negative Temperature
Marco Baldovin, Stefano Iubini, Roberto Livi +1
Do negative absolute temperatures matter physics and specifically Statistical Physics? We provide evidence that we can certainly answer positively to this vexata quaestio. The grea…
Chaos and localization in the Discrete Nonlinear Schrödinger Equation
Stefano Iubini, Antonio Politi
We analyze the chaotic dynamics of a one-dimensional discrete nonlinear Schrödinger equation. This nonintegrable model, ubiquitous in several fields of physics, describes the behav…
Negative-temperature Fourier transport in one-dimensional systems
Marco Baldovin, Stefano Iubini
We investigate nonequilibrium steady states in a class of one-dimensional diffusive systems that can attain negative absolute temperatures. The cases of a paramagnetic spin system,…
Finite-size localization scenarios in condensation transitions
Gabriele Gotti, Stefano Iubini, Paolo Politi
We consider the phenomenon of condensation of a globally conserved quantity distributed on sites, occurring when the density exceeds a critical de…
Dephasing-assisted macrospin transport
S. Iubini, S. Borlenghi, A. Delin +2
Transport phenomena are ubiquitous in physics, and it is generally understood that the environmental disorder and noise deteriorates the transfer of excitations. There are however…
Aging of living polymer networks: a model with patchy particles
Stefano Iubini, Marco Baiesi, Enzo Orlandini
Microrheology experiments show that viscoelastic media composed by wormlike micellar networks display complex relaxations lasting seconds even at the scale of micrometers. By mappi…
Nonequilibrium phenomena in nonlinear lattices: from slow relaxation to anomalous transport
Stefano Iubini, Stefano Lepri, Roberto Livi +2
This Chapter contains an overview of the effects of nonlinear interactions in selected problems of non-equilibrium statistical mechanics. Most of the emphasis is put on open setups…