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Strong coupling model for string breaking on the lattice. (English) Zbl 1051.81541

Summary: A model for SU\((n)\) string breaking on the lattice is formulated using strong coupling ideas. It gives an explicit picture of string breaking, in the presence of dynamical quarks, as a mixing process between a string state and a two-meson state. An analysis of the Wilson loop shows that the evolution of the mixing angle as a function of separation may obscure the expected crossover effect. If a sufficiently extensive mixing region exists then an appropriate combination of transition amplitudes may help to reveal the effect. The sensitivity of the mixing region to the values of the meson energy and the dynamical quark mass is explored.

MSC:

81T13 Yang-Mills and other gauge theories in quantum field theory
81T25 Quantum field theory on lattices

References:

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[10] I. T. Drummond, Strong Coupling Model for String Breaking on the Lattice, hep-lat/9805012; I. T. Drummond, Strong Coupling Model for String Breaking on the Lattice, hep-lat/9805012 · Zbl 1051.81541
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