P. Butera

Publication List Details

Period

1992 - 2009

Number

25

Co-Authors

Extended scaling behavior of the spatially-anisotropic classical XY model in the crossover from three to two dimensions (2009)

Butera, P., Pernici, M.

The bivariate high-temperature expansion of the spin-spin correlation-function of the three-dimensional classical XY (planar rotator) model, with spatially-anisotropic nearest-neighbor couplings, is...

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 (2008)

Butera, P., Pernici, M.

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 isotropic interactions...

Further extensions of the high-temperature expansions for the two-dimensional classical XY model on the triangular and the square lattices (2008)

Butera, P., Pernici, M.

The high-temperature expansions for the spin-spin correlation function of the two-dimensional classical XY (planar rotator) model are extended by two terms, from order 24 through order 26, in the...

Extended Scaling for the high dimension and square lattice Ising Ferromagnets (2008)

Campbell, I. A., Butera, P.

In the high dimension (mean field) limit the susceptibility and the second moment correlation length of the Ising ferromagnet depend on temperature as chi(T)=tau^{-1} and xi(T)=T^{-1/2}tau^{-1/2}...

High-temperature expansions through order 24 for the two-dimensional classical XY model on the square lattice (2007)

Butera, P., Pernici, M.

The high-temperature expansion of the spin-spin correlation function of the two-dimensional classical XY (planar rotator) model on the square lattice is extended by three terms, from order 21 through...

The \phi_3^4 lattice field theory viewed from the high-temperature side (2005)

Butera, P., Comi, M.

We analyze high-temperature series expansions of the two-point and four-point correlation-functions in the three-dimensional euclidean lattice scalar field theory with quartic self-coupling, which...

Updated tests of scaling and universality for the spin-spin correlations in the 2D and 3D spin-S Ising models using high-temperature expansions (2004)

Butera, P., Comi, M.

We have extended, from order 12 through order 25, the high-temperature series expansions (in zero magnetic field) for the spin-spin correlations of the spin-S Ising models on the square, simple-cubic...

Critical parameters and universal amplitude ratios of two-dimensional spin-S Ising models using high- and low-temperature expansions (2003)

Butera, P., Comi, M., Guttmann, A. J.

For the study of Ising models of general spin S on the square lattice, we have combined our recently extended high-temperature expansions with the low-temperature expansions derived some time ago by...

A library of extended high-temperature expansions of basic observables for the spin S Ising models on two- and three-dimensional lattices (2002)

Butera, P., Comi, M.

We present an on-line library of unprecedented extension for high-temperature expansions of basic observables in the Ising models of general spin S, with nearest-neighbor interactions. We have...

Critical universality and hyperscaling revisited for Ising models of general spin using extended high-temperature series (2001)

Butera, P., Comi, M.

We have extended through beta^{23} the high-temperature expansion of the second field derivative of the susceptibility for Ising models of general spin, with nearest-neighbor interactions, on the...

A remark on the numerical validation of triviality for scalar field theories using high-temperature expansions (2001)

Butera, P., Comi, M.

We suggest a simple modification of the usual procedures of analysis for the high-temperature (strong-coupling or hopping-parameter) expansions of the renormalized four-point coupling constant in the...

Extension to order $\beta^{23}$ of the high-temperature expansions for the spin-1/2 Ising model on the simple-cubic and the body-centered-cubic lattices (2000)

Butera, P., Comi, M.

Using a renormalized linked-cluster-expansion method, we have extended to order $\beta^{23}$ the high-temperature series for the susceptibility $\chi$ and the second-moment correlation length $\xi$...

Enumeration of the self-avoiding polygons on a lattice by the Schwinger-Dyson equations (1999)

Butera, P., Comi, M.

We show how to compute the generating function of the self-avoiding polygons on a lattice by using the statistical mechanics Schwinger-Dyson equations for the correlation functions of the $N$-vector...

Critical specific heats of the N-vector spin models on the sc and the bcc lattices (1999)

Butera, P., Comi, M.

We have computed through order $\beta^{21}$ the high-temperature expansions for the nearest-neighbor spin correlation function $G(N,\beta)$ of the classical N-vector model, with general N, on the...

High temperature study of the Kosterlitz-Thouless phase transition in the XY model on the triangular lattice (1999)

Butera, P., Comi, M.

High temperature series expansions of the spin-spin correlation function for the XY (or plane rotator) model on the triangular lattice are extended by two terms up to order beta^{14}. Tables of the...

Monte Carlo simulations and field transformation: the scalar case (1998)

Alles, B., Butera, P., Della Morte, M., Marchesini, G.

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 simulation of a...

Renormalized couplings and scaling correction amplitudes in the N-vector spin models on the sc and the bcc lattices (1998)

Butera, P., Comi, M.

For the classical N-vector model, with arbitrary N, we have computed through order \beta^{17} the high temperature expansions of the second field derivative of the susceptibility \chi_4(N,\beta) on...

Perturbative renormalization group, exact results and high temperature series to order 21 for the N-vector spin models on the square lattice (1997)

Butera, P., Comi, M.

High temperature expansions for the susceptibility and the second correlation moment of the classical N-vector model (also known as the O(N) symmetric Heisenberg classical spin model or the as the...

Critical parameters of N-vector spin models on 3d lattices from high temperature series extended to order beta^{21} (1997)

Butera, P., Comi, M.

High temperature expansions for the free energy, the susceptibility and the second correlation moment of the classical N-vector model [also denoted as the O(N) symmetric classical spin Heisenberg...

N-vector spin models on the sc and the bcc lattices: a study of the critical behavior of the susceptibility and of the correlation length by high temperature series extended to order beta^{21} (1997)

Butera, P., Comi, M.

High temperature expansions for the free energy, the susceptibility and the second correlation moment of the classical N-vector model [also known as the O(N) symmetric classical spin Heisenberg model...

The 2n-point renormalized coupling constants in the 3d Ising model: estimates by high temperature series to order beta^17 (1997)

Butera, P., Comi, M.

We compute the 2n-point renormalized coupling constants in the symmetric phase of the 3d Ising model on the sc lattice in terms of the high temperature expansions O(beta^{17}) of the Fourier...

New extended high temperature series for the N-vector spin models on three-dimensional bipartite lattices (1995)

Butera, P., Comi, M.

High temperature expansions for the susceptibility and the second correlation moment of the classical N-vector model (O(N) symmetric Heisenberg model) on the sc and the bcc lattices are extended to...

Critical exponents of the three-dimensional classical plane rotator model on the sc lattice from a high temperature series analysis (1993)

Butera, P., Comi, M., Guttmann, A. J.

High temperature series expansions of the spin-spin correlation function for the plane rotator (or XY) model on the sc lattice are extended by three terms through order $\beta^{17}$. Tables of the...

A quantitative study of the Kosterlitz-Thouless phase transition in a system of two-dimensional plane rotators ( XY model ) by high temperature expansions through $\beta^{20}$ (1992)

Butera, P., Comi, M.

High temperature series expansions of the spin-spin correlation function for the plane rotator (or XY) model on the square lattice are extended by three terms through order $\beta^{20}$. Tables of...

High-Temperature series for the $RP^{n-1}$ lattice spin model (generalized Maier-Saupe model of nematic liquid crystals) in two space dimensions and with general spin dimensionality n (1992)

Butera, P., Comi, M.

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 dimensionality n....