Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
1994-11-07
Nucl.Phys.B445:81-108,1995
Physics
High Energy Physics
High Energy Physics - Lattice
LaTeX, 30 pages, postscript files of figures will be sent separately
Scientific paper
10.1016/0550-3213(95)00126-D
We propose a non-perturbative method for computing the renormalization constants of generic composite operators. This method is intended to reduce some systematic errors, which are present when one tries to obtain physical predictions from the matrix elements of lattice operators. We also present the results of a calculation of the renormalization constants of several two-fermion operators, obtained, with our method, by numerical simulation of $QCD$, on a $16^3 \times 32$ lattice, at $\beta=6.0$. The results of this simulation are encouraging, and further applications to four-fermion operators and to the heavy quark effective theory are proposed.
Martinelli Gabriele
Pittori Carlotta
Sachrajda Chris T.
Testa Massimo
Vladikas Anastassios
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