Conveners
Vacuum Structure and Confinement
- Jeff Greensite (San Francisco State University)
In order to clarify the mechanism of quark confinement in the Yang-Mills theory with mass gap, we propose to investigate the massive Yang-Mills model, namely, Yang-Mills theory with ``a gauge-invariant gluon mass term’’, to be deduced from a specific gauge-scalar model with a single radially-fixed scalar field under a suitable constraint called the reduction condition. The gluon mass term...
In this work we study, by means of Monte Carlo simulations, the
topological properties of Yang-Mills (YM) theory in presence of the
double trace deformation. The deformation consists of an extra piece
added to the standard YM action, which forbids the deconfinement phase
transition even at high temperature. We compute topological
observables (such as the topological susceptibility and the...
We extend the spectral projectors method to staggered fermions. Applying the index theorem to the staggered Dirac operator it is possible to work out an expression for the topological susceptibility which depends only on the orthogonal projectors on quasi zero-modes, as it has already been done for Dirac-Wilson fermions.
Besides, we generalize this method deriving analogous expressions for all...
Using the gradient flow, the strong coupling constant alpha_s and the vacuum angle theta of the SU(3) Yang-Mills theory are investigated in the infrared limit. It appears that theta tends to zero (mod 2 pi), thus restoring CP invariance, while alpha_s shows power-law divergence, which naturally leads to a linear confining potential.
It is known that the naive Abelian Wilson loop defined by the Abelian projection cannot reproduce the correct behavior of the double-winding Wilson loop. It is also known that the naive Abelian Wilson loop cannnot reproduce the correct behavior of the Wilson loops in higher representations, but this problem was recently solved by using the redefiend "Abelian" Wilson loop.
In this talk, we will...
