Lattice study of conformality in twelve-flavor QCD
Yasumichi Aoki, Tatsumi Aoyama, Masafumi Kurachi, Toshihide Maskawa,, Kei-ichi Nagai, Hiroshi Ohki, Akihiro Shibata, Koichi Yamawaki, and Takeshi, Yamazaki
TL;DR
This study investigates whether twelve-flavor QCD exhibits infrared conformality by analyzing lattice data for meson properties, finding results consistent with a conformal phase and estimating the mass anomalous dimension.
Contribution
The paper provides lattice evidence supporting conformality in twelve-flavor QCD and estimates the mass anomalous dimension using HISQ action.
Findings
Results are consistent with conformal hypothesis
Mass anomalous dimension estimated as 0.4-0.5
Analysis across multiple lattice spacings and fermion masses
Abstract
We study infrared conformality of the twelve-flavor QCD on the lattice. Utilizing the highly improved staggered quarks (HISQ) type action which is useful to study the continuum physics, we analyze the lattice data of the mass and the decay constant of a pseudoscalar meson and the mass of a vector meson as well at several values of lattice spacing and fermion mass. Our result is consistent with the conformal hypothesis for the mass anomalous dimension .
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