Speaker
Takumi Iritani
(Kyoto University)
Description
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 the Landau gauge, the instantaneous potential has no linear part.
We find that this linear confinement part appears and grows
during the change from the Landau gauge to the Coulomb gauge.
We also find that the linear derivative of the instantaneous potential
coincides with the string tension in a specified lambda gauge with
lambda_C. In this gauge, the interquark potential can be approximately
described by the instantaneous gluon exchange. We expect that this
lambda_C gauge is useful in connecting from QCD to the quark model.
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Primary author
Takumi Iritani
(Kyoto University)
Co-author
Prof.
Hideo Suganuma
(Kyoto University)
