arXiv subjects

Silvia N. Santalla

Publications and source records attributed to Silvia N. Santalla.

38 records · Page 3Linked to original sources

arXiv2005

Vertically extended Frenkel-Kontorova model: a real space renormalization group study

A modification of the Frenkel-Kontorova model is presented in which particles are allowed to move in the vertical direction. This model is used to study the formation of islands for a monolayer of 1D interfaces and the corresponding roughness transition. Both analytical and numerical approaches are employed, and the numerical algorithm is based upon real space renormalization group techniques.

cond-mat.mtrl-sci↗

arXiv2001

Pion gas viscosity at low temperature and density

By using Chiral Perturbation Theory and the Uehling-Uhlenbeck equation we compute the viscosity of a pion gas, in the low temperature and low density regime, in terms of the temperature, and the pion fugacity. The viscosity turns out to be proportional to the squared root of the temperature over the pion mass. Next to leading corrections are proportional to the temperature over the pion mass to the 3/2.

hep-ph↗