4,420 research outputs found
On the Supergravity Evaluation of Wilson Loop Correlators in Confining Theories
We explicitly show the area law behavior of a circular Wilson loop in
confining theories from supergravity. We calculate the correlator of two Wilson
loops from supergravity in confining backgrounds. We find that it is dominated
by an exchange of a ``scalarball'' that is lighter than the glueballs. We
interpret these results in terms of the meson-meson potential in such theories.Comment: Latex, 13 pages, 2 figure
The "Dual" Variables Of Yang-Mills Theory And Local Gauge Invariant Variables
After adding auxiliary fields and integrating out the original variables, the
Yang-Mills action can be expressed in terms of local gauge invariant variables.
This method reproduces the known solution of the two dimensional
theory. In more than two dimensions the action splits into a topological part
and a part proportional to . We demonstrate the procedure for
in three dimensions where we reproduce a gravity-like theory. We discuss the
four dimensional case as well. We use a cubic expression in the fields as a
space-time metric to obtain a covariant Lagrangian. We also show how the
four-dimensional theory can be expressed in terms of a local action
with six degrees of freedom only.Comment: 34pp, LaTeX, Corrections in reference
The string tension in massive
We compute the string tension in massive . It is shown that the string
tension vanishes when the mass of the dynamical quark is zero, with no
dependence on the representations of the dynamical or of the external charges.
When a small mass () is added, a tension appears and we calculate its
value as a function of the representations.Comment: 10 pages, Late
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