Lattice2010

Session

Parallel 44: Applications beyond QCD

17 Jun 2010, 16:40

Villasimius, Sardinia

107. Exploration of the phase structure of the $SU(N_c)$ lattice gauge theory with many Wilson fermions at strong coupling

Keiichi Nagai (KEK, Theory Center)

17/06/2010, 16:40

Applications beyond QCD

We explore aspects of the phase structure of $SU(2)$ and $SU(3)$ lattice gauge theories at strong coupling with many flavours $N_f$ of Wilson fermions in the fundamental representation. The pseudoscalar meson mass and the quark mass as a function of hopping parameter are observed to deviate from the expected analytic dependence, at least for sufficiently large $N_f$. Implications of...

191. MCRG Minimal Walking Technicolor

Liam Keegan (Edinburgh University)

17/06/2010, 17:00

Applications beyond QCD

We present a Monte Carlo renormalization group study of the SU(2) gauge theory with two Dirac fermions in the adjoint representation. Using the two lattice matching tecnhique recently advocated and exploited by Anna Hasenfratz, we measure the running of the coupling and the anomalous mass dimension.

215. Mass anomalous dimension and running of the coupling in SU(2) with six fundamental fermions

Thomas Pickup (University of Oxford)

17/06/2010, 17:20

Applications beyond QCD

We simulate SU(2) gauge theory with six massless fundamental Dirac fermions. By using the Schrödinger Functional method we measure the running of the coupling and the fermion mass over a wide range of length scales. We observe very slow running of the coupling and construct an estimator for the fermion mass anomalous dimension at an IR fixed point. Our results are consistent with an...

224. Study of the scaling properties in SU(2) gauge theory with eight flavors

Hiroshi Ohki (Osaka University)

17/06/2010, 17:40

Applications beyond QCD

We present our preliminary study of the SU(2) gauge theory with 8 flavor of fermions in fundamental representation. This theory could be a candidate of the gauge theory with conformal fixed point. By studying physical observables such as running gauge coupling in twisted boundary conditions, we investigate a possible signal for a conformal behavior.