485 citations · 5.9k across the 127 of their papers we have counts for
7 papers · 1 filter
Nonstandard Cutoff Effects in the Nonlinear Sigma Model
Martin Hasenbusch, Peter Hasenfratz, Ferenc Niedermayer +2
High precision measurements of the renormalized zero-momentum 4-point coupling g_R and of the Luscher-Weisz-Wolff running coupling gbar(L) = L*m(L) performed with two different lat…
Speeding up the Hybrid-Monte-Carlo algorithm for dynamical fermions
M. Hasenbusch, K. Jansen
We propose a modification of the Hybrid-Monte-Carlo algorithm that allows for a larger step-size of the integration scheme at constant acceptance rate. The key ingredient is the sp…
Critical exponents and equation of state of the three-dimensional Heisenberg universality class
M. Campostrini, M. Hasenbusch, A. Pelissetto +2
We improve the theoretical estimates of the critical exponents for the three-dimensional Heisenberg universality class. We find gamma=1.3960(9), nu=0.7112(5), eta=0.0375(5), alpha=…
Speeding up the Hybrid-Monte-Carlo algorithm for dynamical fermions
Martin Hasenbusch
We propose a modification of the Hybrid-Monte-Carlo algorithm that allows for a larger step-size of the integration scheme at constant acceptance rate. The key ingredient is that t…
Irrelevant operators in the two-dimensional Ising model
Michele Caselle, Martin Hasenbusch, Andrea Pelissetto +1
By using conformal-field theory, we classify the possible irrelevant operators for the Ising model on the square and triangular lattices. We analyze the existing results for the fr…
First results on the running coupling in QCD with two massless flavours
Achim Bode, Roberto Frezzotti, Bernd Gehrmann +11
We report on the non-perturbative computation of the running coupling of two-flavour QCD in the Schr"odinger functional scheme. The corresponding Lambda-parameter, which describes…