Pion mass dependence of the nucleon mass in the chiral quark soliton model

K. Goeke; J. Ossmann; P. Schweitzer; A. Silva

doi:10.1140/epja/i2005-10229-5

EPJ

Pion mass dependence of the nucleon mass in the chiral quark soliton model

K. Goeke¹, J. Ossmann¹, P. Schweitzer¹^* and A. Silva²

¹ Institut für Theoretische Physik II, Ruhr-Universität Bochum, D-44789, Bochum, Germany
² Departamento de Fısica and Centro de Fısica Computacional, Universidade de Coimbra, P-3000, Coimbra, Portugal

Received: 25 May 2005
Accepted: 31 January 2006
Published online: 20 February 2006

Abstract

The dependence of the nucleon mass on the mass of the pion is studied in the framework of the chiral quark-soliton model. A remarkable agreement is observed with lattice data from recent full dynamical simulations. The possibility and limitations to use the results from the chiral quark soliton model as a guideline for the chiral extrapolation of lattice data are discussed.

PACS: 12.39.Fe Chiral Lagrangians – / 11.15.Pg Expansions for large numbers of components (e.g. , 1/N _c expansions) – / 12.38.Gc Lattice QCD calculations – / 14.20.Dh Protons and neutrons –