Lattice2010

Session

Parallel 43: Applications beyond QCD

17 Jun 2010, 14:30

Villasimius, Sardinia

258. Condensate enhancement for mass generation in SU(3) gauge theory.

Pavlos Vranas (Lawrence Livermore National Laboratory)

17/06/2010, 14:30

Applications beyond QCD

Models of electroweak symmetry breaking that use new strong interactions may depend on an enhanced chiral condensate in order to be able to generate the known fermion masses. This may be the case for near conformal gauge theories. Here I present preliminary results of the Lattice Strong Dynamics collaboration for the chiral condensate in SU(3) gauge theory with two six and ten DWF flavors in...

293. Flavor dependence of hadron spectrum in Technicolor theories

George Fleming (Yale University)

17/06/2010, 14:50

Applications beyond QCD

An alternative to the Standard Model Higgs mechanism to explain the generation of the W and Z boson masses is to have dynamical electroweak symmetry breaking as a result of some new strong interactions at high energies. Lattice studies of strongly-interacting theories other than QCD can give us important information about the behaviors of such Technicolor theories in a non-perturbative...

208. Flavor dependence of the S parameter in SU(3) gauge theory

David Schaich (Boston University)

17/06/2010, 15:10

Applications beyond QCD

Precision electroweak observables such as the Peskin--Takeuchi S parameter have long been used to constrain models of electroweak symmetry breaking that involve new strong dynamics. However, nonperturbative calculations of S from first principles have previously only been performed for QCD. I present initial results by the Lattice Strong Dynamics (LSD) Collaboration for the S parameter in...

129. Improved Lattice Spectroscopy of Minimal Walking Technicolor

Eoin Kerrane (School of Physics and Astronomy, University of Edinburgh)

17/06/2010, 15:30

Applications beyond QCD

Lattice studies of theories other than QCD have recently begun to shed light on the conjectured conformal window of Yang-Mills field theories, and whether they can help to form viable models of dynamical electroweak symmetry breaking. Minimal Walking Technicolor has attracted particular attention. We describe recent spectroscopic studies of MWT, searching for signs of near-conformal behaviour...

205. Chiral symmetry of graphene and strong coupling lattice gauge theory

Yasufumi Araki (University of Tokyo)

17/06/2010, 15:50

Applications beyond QCD

Electrons on suspended graphene (monoatomic layer of carbon atoms) can be described as (2+1)-dimensional massless Dirac fermions strongly interacting with (3+1)-dimensional compact or non-compact U(1) gauge field. By employing the techniques of square lattice regularization and strong coupling expansion, we find that the electrons obtain a finite spectral gap in the strong coupling regime do...