An attractive nucleon-nucleon spin-orbit force from skyrmions with dilatons

Abstract

Within the skyrmion approach for the nucleon-nucleon force, difficulties have been experienced in obtaining an isoscalar attractive spin-orbit potential, in parallel to the problems of finding attraction in the isoscalar central potential. We here study the spin-orbit force using a skyrmion with four- and six-derivative stabilizing terms in the lagrangian as well as with the crucial addition of a dilaton. With these features present the spin-orbit force proves to be attractive as does the central potential. In the absence of the dilaton, attraction can also be found for the spin-orbit potential but only at the expense of a greatly over-emphasized term with six derivatives and a continuing absence of attraction in the central potential.

8 pages plus 5 figures in uuencoded tar-compressed form

References in corpus (3)

• The Skyrme model description of the spin-orbit force
• Proton spin content from skyrmions
• Dilatons in the topological soliton model for the hyperons

Cited by in corpus (7)

• Scattering of Skyrmions
• An attractive spin-orbit potential from the Skyrme model
• Solitons and Black Holes in a Generalized Skyrme Model with Dilaton-Quarkonium field
• Nucleon-nucleon potential from skyrmion dipole interactions
• Nucleon-nucleon potential from instanton holonomies
• Isoscalar NN spin-orbit potential from a Skyrme model with scalar mesons
• On the Skyrme model prediction for the N-N spin-orbit force