2007/06/06 by J. A. Ponciano, N. N. Scoccola · 1 citation
Physics and Astronomy · #Black Holes and Theoretical Physics #High-Energy Particle Collisions Research #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.1016/j.physletb.2007.11.047
published as Phys.Lett.B659:551-554,2008 · 8 pages, 2 figures
arxiv created 2007/06/06 · openalex publication_date 2007/12/05 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01
We analyze the existence of localized finite energy topological excitations on top of the perturbative pion vacuum within the Skyrme model at finite isospin chemical potential and finite pion mass. We show that there is a critical isospin chemical potential μIc above which such solutions cease to exist. We find that μIc is closely related to the value of the pion mass. In particular for vanishing pion mass we obtain μIc = 0 in contradiction with some results recently reported in the literature. We also find that below μIc the skyrmion mass and baryon radius show, at least for the case of the hedgehog ansatz, only a mild dependence on the isospin chemical potential.