33 citations · 112 across the 8 of their papers we have counts for
8 papers
Instability of the O(5) multicritical behavior in the SO(5) theory of high-Tc superconductors
Martin Hasenbusch, Andrea Pelissetto, Ettore Vicari
We study the nature of the multicritical point in the three-dimensional O(3)+O(2) symmetric Landau-Ginzburg-Wilson theory, which describes the competition of two order parameters t…
Extracting physics from an unphysical situation: light mesons in a small box
W. Bietenholz, S. Capitani, T. Chiarappa +9
Quantum Chromo Dynamics is considered in a setup where the light mesons are squeezed into unphysically small boxes. We show how such a situation can be used to determine the coupli…
The critical equation of state of the 2D Ising model
M. Caselle, M. Hasenbusch, A. Pelissetto +1
We compute the 2n-point coupling constants in the high-temperature phase of the 2d Ising model by using transfer-matrix techniques. This provides the first few terms of the expansi…
Non-perturbative states in the three-dimensional phi^4 theory
M. Caselle, M. Hasenbusch, P. Provero
We study the spectrum of massive excitations of the three-dimensional phi^4 and Ising models, in the broken-symmetry phase. Using a variational method, we show that the spectrum co…
Canonical Demon Monte Carlo Renormalization Group
M. Hasenbusch, K. Pinn, C. Wieczerkowski
We describe a method to compute renormalized coupling constants in a Monte Carlo renormalization group calculation. It can be used, e.g., for lattice spin or gauge models. The basi…
The Sine Gordon Model: Perturbation Theory and Cluster Monte Carlo
M. Hasenbusch, M. Marcu, K. Pinn
We study the expansion of the surface thickness in the 2-dimensional lattice Sine Gordon model in powers of the fugacity z. Using the expansion to order z**2, we derive lines of co…