Hideo Suganuma
(Department of Physics, Kyoto University)
14/06/2010, 14:30
Vacuum structure and confinement
The gluon propagator is studied in the Landau gauge in SU(3) lattice QCD
at beta=5.7, 5.8 and 6.0 at the quenched level.
Through the functional-form analysis of the gluon propagator
obtained in lattice QCD, we find that the Landau-gauge gluon propagator
is well described by the Yukawa-type function e^{-mr}/r with m=600MeV
for r=0.1-1.0fm in the four-dimensional Euclidean space-time...
Takumi Iritani
(Kyoto University)
14/06/2010, 14:50
Vacuum structure and confinement
We analyze the instantaneous interquark potential in the
generalized Landau gauge (lambda gauge) in SU(3) lattice QCD.
Using this gauge, we can analyze continuous change of
gluon properties from the Landau gauge toward the Coulomb gauge.
In the Coulomb gauge, the instantaneous potential is expressed by the
Coulomb plus linear potential, with about two times larger string tension.
In...
Arata Yamamoto
(Kyoto University)
14/06/2010, 15:10
Vacuum structure and confinement
We investigated which momentum components of gluons induce confinement and chiral symmetry breaking in lattice QCD. For this purpose, we formulated a new framework to introduce the momentum cutoff to the link variable. We found that confinement and chiral symmetry breaking are induced by different momentum components of gluons.
Enrico Rinaldi
(SUPA, School of Physics and Astronomy, University of Edinburgh)
14/06/2010, 15:30
Vacuum structure and confinement
Using variational techniques, we measured the masses of the ground-state
glueballs and some of their excitations in all the irreducible
representationsof the cubic group in SU(N) gauge theories for N ranging
from 3 to 8,at fixed lattice spacing in the scaling region, where some
features of the continuum spectrum are already manifest. For this
calculation, we developed an automated...
Terry E Tomboulis
(UCLA Department of Physics)
14/06/2010, 15:50
Vacuum structure and confinement
The possibility of Lorentz symmetry (spontaneous) breaking (LSB) has attracted
considerable attention in recent years for a variety of reasons,
including the attractive prospect of the graviton as a Goldstone boson.
Though a number of effective field theory analyses of such phenomena have
recently been given it remains an open question whether they can take place
in an underlying UV...
