8 papers
On the size of knots in ring polymers
B. Marcone, E. Orlandini, A. L. Stella +1
We give two different, statistically consistent definitions of the length l of a prime knot tied into a polymer ring. In the good solvent regime the polymer is modelled by a self a…
Directed polymers with tilted columnar disorder and Burgers-like turbulence
Roya Mohayaee, Attilio L. Stella, Carlo Vanderzande
The minimal energy variations of a directed polymer with tilted columnar disorder in two dimensions are shown numerically to obey a multiscaling at short distances which crosses ov…
Rare events and breakdown of simple scaling in the Abelian sandpile
M. De Menech, A. L. Stella, C. Tebaldi
Due to intermittency and conservation, the Abelian sandpile in 2D obeys multifractal, rather than finite size scaling. In the thermodynamic limit, a vanishingly small fraction of l…
Boundary effects in a random neighbor model of earthquakes
Stefano Lise, Attilio L. Stella
We introduce spatial inhomogeneities (boundaries) in a random neighbor version of the Olami, Feder and Christensen model [Phys. Rev. Lett. 68, 1244 (1992)] and study the distributi…
Reentrant Wetting Transition of a Rough Wall
G. Giugliarelli, A. L. Stella
A model describing depinning of an interface from a rough, self-affine substrate, is studied by transfer matrix methods. The phase diagram is determined for several values of…
Finite Size Scaling Analysis of Biased Diffusion on Fractals
G. Sartoni, A. L. Stella
Diffusion on a T fractal lattice under the influence of topological biasing fields is studied by finite size scaling methods. This allows to avoid proliferation and singularities w…