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Convergence of the chiral expansion for the nucleon mass

Judith A. McGovern·Michael C. Birse
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Abstract

A number of papers recently have used fourth-order chiral perturbation theory to extrapolate lattice data for the nucleon mass; the process seems surprisingly successful even for large pion masses. This paper shows that the inclusion of the fifth-order terms spoils the agreement.

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Judith A. McGovern, Michael C. Birse. 2006-08-01. Convergence of the chiral expansion for the nucleon mass. https://doi.org/10.1103/physrevd.74.097501

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