Stabilization of the linear SU(2) Nambu-Jona-Lasinio soliton via vector mesons

Autor:	C. Schüren, F. Döring, E R Arriola, Klaus Goeke
Rok vydání:	1994
Předmět:	Physics Nuclear and High Energy Physics Particle physics Meson High Energy Physics::Lattice Nuclear Theory High Energy Physics::Phenomenology Scalar (mathematics) Sigma Omega Nambu–Jona-Lasinio model Soliton Vector meson Special unitary group
Zdroj:	Journal of Physics G: Nuclear and Particle Physics. 20:399-405
ISSN:	1361-6471 0954-3899
DOI:	10.1088/0954-3899/20/3/002
Popis:	The solitonic sector of the SU(2) NJL model with sigma , pi , rho , A1 and omega mesons is investigated. The scalar and pseudo-scalar meson fields are not constrained to the chiral circle condition, i.e. sigma 2(r)+ pi 2(r) not=fpi 2. We show numerically that the repulsive omega meson prevents the recently discovered collapse of the hedgehog soliton. A comparison of the linear and the nonlinear NJL model leads to similar solitonic properties, although the deviations from the chiral circle condition are found not to be small.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::5f70ce444bff19b14af0df688efa6578 https://doi.org/10.1088/0954-3899/20/3/002 Zobrazit plný text záznamu