Preliminary evidence for UA (1) breaking in QCD from lattice calculations
P Di Vecchia, K Fabricius, GC Rossi, G Veneziano - Nuclear Physics B, 1981 - Elsevier
We suggest a simple definition of the topological charge density Q (x) in the lattice Yang-
Mills theory and evaluate A≡∝ d 4 x< Q (x) Q (0)> in SU (2) by Monte Carlo simulation. The
“data” interpolate well between the strong and weak coupling expansions, which we
compute to order g− 12 and g 6, respectively. After subtraction of the perturbative tail, our
points exhibit the expected asymptotic freedom behaviour giving A 1 4≌(0.11±0.02) K 1 2, K
being the SU (2) quarkless string tension. Although a larger value for A 1 4 K− 1 2 would be …
Mills theory and evaluate A≡∝ d 4 x< Q (x) Q (0)> in SU (2) by Monte Carlo simulation. The
“data” interpolate well between the strong and weak coupling expansions, which we
compute to order g− 12 and g 6, respectively. After subtraction of the perturbative tail, our
points exhibit the expected asymptotic freedom behaviour giving A 1 4≌(0.11±0.02) K 1 2, K
being the SU (2) quarkless string tension. Although a larger value for A 1 4 K− 1 2 would be …
[引用][C] PRELIMINARY EVIDENCE FOR UA (1) BREAKING IN QCD FROM LATTICE CALCULATIONS
V DI, K FABRICIUS, R GC, G VENEZIANO - 1981 - pascal-francis.inist.fr
PRELIMINARY EVIDENCE FOR UA(1) BREAKING IN QCD FROM LATTICE
CALCULATIONS … Selected items (1) … PRELIMINARY EVIDENCE FOR U A (1)
BREAKING IN QCD FROM LATTICE CALCULATIONS …
CALCULATIONS … Selected items (1) … PRELIMINARY EVIDENCE FOR U A (1)
BREAKING IN QCD FROM LATTICE CALCULATIONS …
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