9 citations · 24 across the 4 of their papers we have counts for
4 papers
A positivity property of the dimer entropy of graphs
P. Butera, P. Federbush, M. Pernici
The entropy of a monomer-dimer system on an infinite bipartite lattice can be written as a mean-field part plus a series expansion in the dimer density. In a previous paper it has…
A study of the (m,d,N)=(1,3,2) Lifshitz point and of the three- dimensional XY universality class by high-temperature bivariate series for the XY models with anisotropic competing interactions
P. Butera, M. Pernici
High-temperature bivariate expansions have been derived for the two-spin correlation-function in a variety of classical lattice XY (planar rotator) models in which spatially isotro…
Monte Carlo simulations and field transformation: the scalar case
B. Alles, P. Butera, M. Della Morte +1
We describe a new method in lattice field theory to compute observables at various values of the parameters lambda_i in the action S[phi,lambda_i]. Firstly one performs a single si…
High-Temperature series for the lattice spin model (generalized Maier-Saupe model of nematic liquid crystals) in two space dimensions and with general spin dimensionality n
P. Butera, M. Comi
High temperature series expansions of the spin-spin correlation functions of the RP^{n-1} spin model on the square lattice are computed through order beta^{8} for general spin dime…