Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
1998-10-26
Nucl.Phys.Proc.Suppl. 73 (1999) 859-861
Physics
High Energy Physics
High Energy Physics - Lattice
3 pages, LateX, 2 figures, LATTICE98(algorithms), to be published on Nucl. Phys. Proc. Suppl. LATTICE98
Scientific paper
10.1016/S0920-5632(99)85225-6
A new method to compute observables at many values of the parameters \lambda for a model with lattice action {\cal{S}}(\phi, \lambda) is described. After fixing a reference set \lambda^r of parameters, a single simulation is carried out by using a ``reference action'' {\cal{S}} (\phi^r, \lambda^r) to generate configurations of the field \phi^r. Then a suitable analytic transformation is performed from the configurations of \phi^r to the ones corresponding to the action {\cal{S}} (\phi, \lambda). Such a transformation allows to obtain the observables for values of the parameters \lambda close to \lambda^r. I present studies on the reliability of the algorithm in the case of the \phi^4 model in 2 dimensions.
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