Abstract
Zero-point energy corrections to the nucleon mass due to quantum fluctuations around the classical soliton are evaluated. In 3 + 1 dimensions the ultraviolet divergencies require a further subtraction term, in addition to the two subtractions known from 1 + 1 dimensional models. The mass corrections arising from the continuous spectrum are approximated by classical phase-space integrals. They amount to about 20% of the zero mode contributions. Altogether (for f; π = 93 MeV and Skyrme parameter e ∼ 3.5) the quantum fluctuations compensate the large values of the soliton mass and allow for a nucleon mass around 900 MeV.
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