Vanishing of non-Abelian Berry phases in heavy solitonic baryons.

In this article, we show – using a reasoning applicable to both the excitation spectrum in the chiral bag model and the hyperfine structure of diatomic molecules – that the generic form of a nonabelian Berry potential appears in heavy quark effective theory (HQET) and that the Berry potential vanishes for the solitonheavy meson bound state in the heavy-quark limit. The vanishing of the Berry potential in HQET is shown to be related to the restoration of heavy-quark symmetry in infinite heavy-quark-mass limit in close analogy to diatomic molecules at infinite internuclear separation. ∗Permanent address: Department of Physics, Hanyang University, Seoul 133-791, Korea. Supported in part by the KOSEF under Grant No.91-08-00-04 and by Ministry of Education (BSRI-92-231)