309 citations · 3.4k across the 84 of their papers we have counts for
29 papers · 1 filter
Brownian non-Gaussian diffusion of self-avoiding walks
Boris Marcone, Sankaran Nampoothiri, Enzo Orlandini +2
Three-dimensional Monte Carlo simulations provide a striking confirmation to a recent theoretical prediction: the Brownian non-Gaussian diffusion of critical self-avoiding walks. A…
Brownian non-Gaussian polymer diffusion and queing theory in the mean-field limit
Sankaran Nampoothiri, Enzo Orlandini, Flavio Seno +1
We link the Brownian non-Gaussian diffusion of a polymer center of mass to a microscopic cause: the polymerization/depolymerization phenomenon occurring when the polymer is in cont…
Polymers critical point originates Brownian non-Gaussian diffusion
Sankaran Nampoothiri, Enzo Orlandini, Flavio Seno +1
We demonstrate that size fluctuations close to polymers critical point originate the non-Gaussian diffusion of their center of mass. Static universal exponents and -- depen…
Topological disentanglement of linear polymers under tension
Michele Caraglio, Boris Marcone, Fulvio Baldovin +2
We develop a theoretical description of the topological disentanglement occurring when torus knots reach the ends of a semi-flexible polymer under tension. These include decays int…
Translocation of links through a pore: effects of link complexity and size
Michele Caraglio, Enzo Orlandini, Stuart G Whittington
We have used Langevin dynamics to simulate the forced translocation of linked polymer rings through a narrow pore. For fixed size (i.e. fixed number of monomers) the translocation…
Polymerization induces non-Gaussian diffusion
Fulvio Baldovin, Enzo Orlandini, Flavio Seno
Recent theoretical modeling offers a unified picture for the description of stochastic processes characterized by a crossover from anomalous to normal behavior. This is particularl…
Knotted globular ring polymers: how topology affects statistics and thermodynamics
Marco Baiesi, Enzo Orlandini, Attilio L. Stella
The statistical mechanics of a long knotted collapsed polymer is determined by a free-energy with a knot-dependent subleading term, which is linked to the length of the shortest po…
Active Brownian Particles Escaping a Channel in Single File
Emanuele Locatelli, Fulvio Baldovin, Enzo Orlandini +1
Active particles may happen to be confined in channels so narrow that they cannot overtake each other (Single File conditions). This interesting situation reveals nontrivial physic…
Non-equilibrium statistical mechanics of the heat bath for two Brownian particles
Caterina De Bacco, Fulvio Baldovin, Enzo Orlandini +1
We propose a new look at the heat bath for two Brownian particles, in which the heat bath as a `system' is both perturbed and sensed by the Brownian particles. Non-local thermal fl…
Finite-size scaling in unbiased translocation dynamics
Giovanni Brandani, Fulvio Baldovin, Enzo Orlandini +1
Finite-size scaling arguments naturally lead us to introduce a coordinate-dependent diffusion coefficient in a Fokker-Planck description of the late stage dynamics of unbiased poly…
Polymers with spatial or topological constraints: theoretical and computational results
Cristian Micheletti, Davide Marenduzzo, Enzo Orlandini
In this review we provide an organized summary of the theoretical and computational results which are available for polymers subject to spatial or topological constraints. Because…
Noise-induced dynamical phase transitions in long-range systems
Pierre-Henri Chavanis, Fulvio Baldovin, Enzo Orlandini
In the thermodynamic limit, the time evolution of isolated long-range interacting systems is properly described by the Vlasov equation. This equation admits non-equilibrium dynamic…
Interplay between writhe and knotting for swollen and compact polymers
Marco Baiesi, Enzo Orlandini, Stuart G. Whittington
The role of the topology and its relation with the geometry of biopolymers under different physical conditions is a nontrivial and interesting problem. Aiming at understanding this…
Microcanonical quasi-stationarity of long-range interacting systems in contact with a heat bath
Fulvio Baldovin, Pierre-Henri Chavanis, Enzo Orlandini
On the basis of analytical results and molecular dynamics simulations we clarify the nonequilibrium dynamics of a long-range interacting system in contact with a heat bath. For sma…
Self-reptation and slow topological time scale of knotted polymers
Enzo Orlandini, Attilio L. Stella, Carlo Vanderzande +1
We investigate the Rouse dynamics of a flexible ring polymer with a prime knot. Within a Monte Carlo approach, we locate the knot, follow its diffusion, and observe the fluctuation…
Reply to the comment on ``Incomplete equilibrium in long-range interacting systems'' by Tsallis et al
Fulvio Baldovin, Enzo Orlandini
After the rejection of their comment [arXiv:cond-mat/0609399v1] to our Phys. Rev. Lett. {\bf 97}, 100601 (2006), the Authors informed us that an extended version of their comment i…
Ranking knots of random, globular polymer rings
M. Baiesi, E. Orlandini, A. L. Stella
An analysis of extensive simulations of interacting self-avoiding polygons on cubic lattice shows that the frequencies of different knots realized in a random, collapsed polymer ri…
Nosé-Hoover and Langevin thermostats do not reproduce the nonequilibrium behavior of long-range Hamiltonians
Fulvio Baldovin, Enzo Orlandini
We compare simulations performed using the Nosé-Hoover and the Langevin thermostats with the Hamiltonian dynamics of a long-range interacting system in contact with a reservoir. We…
Incomplete equilibrium in long-range interacting systems
Fulvio Baldovin, Enzo Orlandini
We use a Hamiltonian dynamics to discuss the statistical mechanics of long-lasting quasi-stationary states particularly relevant for long-range interacting systems. Despite the pre…
Hamiltonian dynamics reveals the existence of quasi-stationary states for long-range systems in contact with a reservoir
Fulvio Baldovin, Enzo Orlandini
We introduce a Hamiltonian dynamics for the description of long-range interacting systems in contact with a thermal bath (i.e., in the canonical ensemble). The dynamics confirms st…
Scaling of a collapsed polymer globule in 2D
Marco Baiesi, Enzo Orlandini, Attilio L. Stella
Extensive Monte Carlo data analysis gives clear evidence that collapsed linear polymers in two dimensions fall in the universality class of athermal, dense self-avoiding walks, as…
What is the length of a knot in a polymer?
B. Marcone, E. Orlandini, A. L. Stella +1
We give statistical definitions of the length, l, of a loose prime knot tied into a long, fluctuating ring macromolecule. Monte Carlo results for the equilibrium, good solvent regi…
Lattice Boltzmann Algorithm for three-dimensional liquid crystal hydrodynamics
C. Denniston, D. Marenduzzo, E. Orlandini +1
We describe a lattice Boltzmann algorithm to simulate liquid crystal hydrodynamics in three dimensions. The equations of motion are written in terms of a tensor order parameter. Th…
A simple model of DNA denaturation and mutually avoiding walks statistics
Marco Baiesi, Enrico Carlon, Enzo Orlandini +1
Recently Garel, Monthus and Orland (Europhys. Lett. v 55, 132 (2001)) considered a model of DNA denaturation in which excluded volume effects within each strand are neglected, whil…