TY - JOUR
T1 - Zero of the discrete beta function in SU(3) lattice gauge theory with color sextet fermions
AU - Shamir, Yigal
AU - Svetitsky, Benjamin
AU - Degrand, Thomas
PY - 2008/8/15
Y1 - 2008/8/15
N2 - We have carried out a Schrodinger functional calculation for the SU(3) lattice gauge theory with two flavors of Wilson fermions in the sextet representation of the gauge group. We find that the discrete beta function, which governs the change in the running coupling under a discrete change of spatial scale, changes sign when the Schrodinger functional renormalized coupling is in the neighborhood of g2=2.0. The simplest explanation is that the theory has an infrared-attractive fixed point, but more complicated possibilities are allowed by the data. While we compare rescalings by factors of 2 and 4/3, we work at a single lattice spacing.
AB - We have carried out a Schrodinger functional calculation for the SU(3) lattice gauge theory with two flavors of Wilson fermions in the sextet representation of the gauge group. We find that the discrete beta function, which governs the change in the running coupling under a discrete change of spatial scale, changes sign when the Schrodinger functional renormalized coupling is in the neighborhood of g2=2.0. The simplest explanation is that the theory has an infrared-attractive fixed point, but more complicated possibilities are allowed by the data. While we compare rescalings by factors of 2 and 4/3, we work at a single lattice spacing.
UR - http://www.scopus.com/inward/record.url?scp=49749111121&partnerID=8YFLogxK
U2 - 10.1103/PhysRevD.78.031502
DO - 10.1103/PhysRevD.78.031502
M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???
AN - SCOPUS:49749111121
SN - 1550-7998
VL - 78
JO - Physical Review D - Particles, Fields, Gravitation and Cosmology
JF - Physical Review D - Particles, Fields, Gravitation and Cosmology
IS - 3
M1 - 031502
ER -