From screening to confinement in a Higgs-like model

Details From screening to confinement in a Higgs-like model From screening to confinement in a Higgs-like model

2009-02-05

arxiv.org/abs/0902.0905v2

Phys.Lett.B675:145-149,2009

Physics

High Energy Physics

High Energy Physics - Theory

14 pages, no figures. Inserted 2 new references and comments about the short-distance physical cut-off. Final version accepted

Scientific paper

10.1016/j.physletb.2009.03.061

We investigate a recently proposed Higgs-like model (arXiv:0811.4423 [hep-th]), in the framework of a gauge-invariant but path-dependent variables formalism. We compute the static potential between test charges in a condensate of scalars and fermions. In the case of charged massive scalar we recover the screening potential. On the other hand, in the Higgs case, with a "tachyonic" mass term and a quartic potential in the Lagrangian, unexpected features are found. It is observed that the interaction energy is the sum of an effective-Yukawa and a linear potential, leading to the confinement of static charges.

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