TY - JOUR
T1 - Instanton effects in three flavor QCD
AU - Dine, Michael
AU - Draper, Patrick
AU - Festuccia, Guido
N1 - Publisher Copyright:
© 2015 American Physical Society. © 2015 American Physical Society.
PY - 2015/9/3
Y1 - 2015/9/3
N2 - Recently it was shown that in QCD-like theories with Nf>N, where Nf is the number of light flavors and N is the number of colors, there are correlation functions that vanish in perturbation theory and at short distances receive dominant, calculable contributions from small instantons. Here we extend the set of such objects to theories with Nf=N, which includes real QCD, and discuss their application as a calibration of lattice computations at small quark mass. We revisit the related issue of the u quark mass and its additive renormalization by small instantons, and discuss an alternative test of mu=0 on the lattice.
AB - Recently it was shown that in QCD-like theories with Nf>N, where Nf is the number of light flavors and N is the number of colors, there are correlation functions that vanish in perturbation theory and at short distances receive dominant, calculable contributions from small instantons. Here we extend the set of such objects to theories with Nf=N, which includes real QCD, and discuss their application as a calibration of lattice computations at small quark mass. We revisit the related issue of the u quark mass and its additive renormalization by small instantons, and discuss an alternative test of mu=0 on the lattice.
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U2 - 10.1103/PhysRevD.92.054004
DO - 10.1103/PhysRevD.92.054004
M3 - Article
AN - SCOPUS:84943791605
VL - 92
JO - Physical Review D - Particles, Fields, Gravitation and Cosmology
JF - Physical Review D - Particles, Fields, Gravitation and Cosmology
SN - 1550-7998
IS - 5
M1 - 054004
ER -