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8 papers · 1 filter
Possible Failure of Asymptotic Freedom in Two-Dimensional and -Models
S. Caracciolo, R. G. Edwards, A. Pelissetto +1
We have simulated the two-dimensional and -models, at correlation lengths up to about 220 (resp.\ 30), using a Wolff-type embedding algorithm. We see no evidence o…
Non Linear Realizations of in the MSSM: Model Independent Analysis and of Bosons
Sergio Ferrara, Antonio Masiero, Massimo Porrati
We perform a model-independent analysis of the spontaneously broken phase of an supersymmetric gauge theory, by using a non-linear parametrization of the Goldsto…
The Gluon Propagator in Momentum Space
C. Bernard, C. Parrinello, A. Soni
We give preliminary numerical results for the gluon propagator evaluated both in coordinate and momentum space on a 16^3X40 quenched lattice at beta=6.0. Our findings are compared…
Regularity Properties and Pathologies of Position-Space Renormalization-Group Transformations
A. C. D. van Enter, R. Fernandez, A. D. Sokal
We reconsider the conceptual foundations of the renormalization-group (RG) formalism, and prove some rigorous theorems on the regularity properties and possible pathologies of the…
Gribov Copies and Smeared Correlation Functions in Lattice QCD
M. L. Paciello, C. Parrinello, S. Petrarca +2
We study the influence of Gribov copies in the Coulomb gauge on the smeared hadronic correlation functions that are involved in the determination of the B meson decay constant. We…
Wolff-Type Embedding Algorithms for General Nonlinear -Models
Sergio Caracciolo, Robert G. Edwards, Andrea Pelissetto +1
We study a class of Monte Carlo algorithms for the nonlinear -model, based on a Wolff-type embedding of Ising spins into the target manifold . We argue heuristically that, at…