Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
1995-07-21
Mod.Phys.Lett. A11 (1996) 43-54
Physics
High Energy Physics
High Energy Physics - Theory
13 pages + 4 uuencoded eps figures, LaTeX
Scientific paper
The instanton configuration in the SU(2)-gauge system with a Higgs doublet is constructed by using the new valley method. This method defines the configuration by an extension of the field equation and allows the exact conversion of the quasi-zero eigenmode to a collective coordinate. It does not require ad-hoc constraints used in the current constrained instanton method and provides a better mathematical formalism than the constrained instanton method. The resulting instanton, which we call ``valley instanton'', is shown to have desirable behaviors. The result of the numerical investigation is also presented.
Aoyama Hideaki
Harano Toshiyuki
Sato* Masatoshi
Wada Shinya
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