  This comment discusses a recent paper by Walliser and Weigel on the
quantization of chiral soliton models in the context of exotic baryons. Claims
made in that work are misleading due to unfortunate nomenclature. Moreover,
attempts in that paper to go beyond the leading order calculations of the phase
shifts are ad hoc and never justified. This comment also addresses a technical
issue in that paper: the identification of the excitation energy of the
pentaquark obtained via conventional rigid rotor quantization with a frequency
obtained in the context of small amplitude fluctuations. The identification is
erroneous: the small amplitude fluctuation result is based on a first-order
perturbation computation of the frequency around a zero mode solution at a
frequency far from zero and well away from the perturbative regime.

High Energy Physics - Phenomenology