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Effects of Nonperturbative Improvement in Quenched Hadron Spectroscopy
Attilio Cucchieri, Tereza Mendes, Roberto Petronzio
We discuss a comparative analysis of unimproved and nonperturbatively improved quenched hadron spectroscopy, on a set of 104 gauge configurations, at beta=6.2. We also present here…
Pseudo-Character Expansions for U(N)-Invariant Spin Models on CP^{N-1}
Attilio Cucchieri, Tereza Mendes, Andrea Pelissetto
We define a set of orthogonal functions on the complex projective space CP^{N-1}, and compute their Clebsch-Gordan coefficients as well as a large class of 6-j symbols. We also pro…
Numerical Study of the Gluon Propagator in Lattice Landau Gauge: the Three-Dimensional Case
Attilio Cucchieri
We study the infrared behavior of the gluon propagator in lattice Landau gauge, for pure SU(2) lattice gauge theory in a three-dimensional lattice. Simulations are done for nine di…
Comparison of Improved and Unimproved Quenched Hadron Spectroscopy
A. Cucchieri, T. Mendes, R. Petronzio
We make a comparison between our quenched-hadron-spectroscopy results for the non-perturbatively-improved Wilson action and the corresponding unimproved case, at beta=6.2 on the sa…