The SU(3) gauge theory with fermions in the sextet representation is one of several theories of interest for technicolor models. We have carried out a Schrodinger functional (SF) calculation for the lattice theory with two flavors of Wilson fermions. We find that the discrete beta function changes sign when the SF renormalized coupling is in the neighborhood of g2 = 2.0, showing a breakdown of the perturbative picture even though the coupling is weak. The most straightforward interpretation is an infrared-stable fixed point.
|Journal||Proceedings of Science|
|State||Published - 2008|
|Event||26th International Symposium on Lattice Field Theory, LATTICE 2008 - Williamsburg, United States|
Duration: 14 Jul 2008 → 19 Jul 2008