Speaker
Dr
YU NAKAYAMA
(Caltech)
Description
We propose a novel RG method to specify the location of the IR fixed point in lattice gauge theories and apply it to the $SU(3)$ gauge theories with $N_f$ fundamental fermions.
It is based on the scaling behavior of the propagator through the RG analysis with a finite IR cut-off, which we cannot remove in the conformal field theories in sharp contrast with the confining theories.
The method also enables us to estimate the anomalous mass dimension in the continuum limit at the IR fixed point. We perform the program for $N_f=16, 12, 8 $ and $N_f=7$
and indeed identify the location of the IR fixed points in all cases. Our results are consistent with that the conformal window is 7 \le N_f \le 16.
Primary author
Prof.
Yoichi iwasaki
(Tukuba University)
Co-authors
Prof.
Ken-Ichi Ishikawa
(Hiroshima University, Department of Physical Science)
Prof.
Tomoteru Yoshie
(Center for Computational Sciences, University of Tsukuba)
Dr
YU NAKAYAMA
(Caltech)
