String Breaking in SU(2) Yang Mills Theory with Adjoint Sources
Owe Philipsen, Hartmut Wittig
Abstract
We compute the static potential in three-dimensional SU(2) Yang Mills Theory with adjoint sources using numerical simulations. By employing a variational approach involving string and gluelump operators, we obtain clear evidence for string breaking in the adjoint potential. The breaking scale rb is computed and extrapolated to the continuum limit. The result in units of the scalar glueball mass is rb*mG = 10.3 +/- 1.5. We also resolve the structure of higher excitations of the flux-tube and gluelumps. Furthermore we discuss the implications of our findings for the case of the four-dimensional theory.
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