منابع مشابه
The Skyrme Model
We review the recent developments on the Skyrme model in the context of QCD, and analyze their relevance to low-energy phenomenology. The fundamentals of chiral symmetry and PCAC are presented, and their importance in effective chiral models of the Skyrme type discussed. The nature and properties of skyrmions are thoroughly investigated, with particular stress on the basic role of the Wess—Zumi...
متن کاملFolding in the Skyrme Model
There are only three stable singularities of a differentiable map between threedimensional manifolds, namely folds, cusps and swallowtails. A Skyrme configuration is a map from space to SU2, and its singularities correspond to the points where the baryon density vanishes. In this paper we consider the singularity structure of Skyrme configurations. The Skyrme model can only be solved numericall...
متن کاملSphalerons in the Skyrme Model
Numerical methods are used to compute sphaleron solutions of the Skyrme model. These solutions have topological charge zero and are axially symmetric, consisting of an axial charge n Skyrmion and an axial charge −n antiSkyrmion (with n > 1), balanced in unstable equilibrium. The energy is slightly less than twice the energy of the axially symmetric charge n Skyrmion. A similar configuration wit...
متن کاملHeavy quark symmetry and the Skyrme model.
We present a consistent way of describing heavy baryons containing a heavy quark as bound states of an SU(2) soliton and heavy mesons. The resulting mass formula reveals the heavy quark symmetry explicitly. By extending the model to the orbitally excited states, we establish the generic structure of the heavy baryon spectrum. As anticipated from the heavy quark spin symmetry, the c-factor denot...
متن کاملThe Baryon Spectrum of the Skyrme Model*
We calculate the spectrum of nucleon and delta resonances of the Skyrme model. The masses that we find are accurate on the average to within 8% of their experimental values up to 3 GeV. For most partial waves the model reproduces many significant features of the experimental Argand diagrams correctly. The values of the Skyrme parameters obtained from a best fit to the spectrum improve some of t...
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ژورنال
عنوان ژورنال: Physics Letters B
سال: 2000
ISSN: 0370-2693
DOI: 10.1016/s0370-2693(00)00581-5