5 papers
First order wetting of rough substrates and quantum unbinding
Attilio L. Stella, Giovanni Sartoni
Replica and functional renormalization group methods show that, with short range substrate forces or in strong fluctuation regimes, wetting of a self-affine rough wall in 2D turns…
Branching Transition of a Directed Polymer in Random Medium
Giovanni Sartoni, Attilio L. Stella
A directed polymer is allowed to branch, with configurations determined by global energy optimization and disorder. A finite size scaling analysis in 2D shows that, if disorder mak…
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…
Branching Interfaces with Infinitely Strong Couplings
Giovanni Sartoni, Attilio L. Stella
A hierarchical froth model of the interface of a random -state Potts ferromagnet in is studied by recursive methods. A fraction of the nearest neighbour bonds is made i…
The Unusual Universality of Branching Interfaces in Random Media
Mehran Kardar, Attilio L. Stella, Giovanni Sartoni +1
We study the criticality of a Potts interface by introducing a {\it froth} model which, unlike its SOS Ising counterpart, incorporates bubbles of different phases. The interface is…