Nuclear forces and currents in large-N C QCD

Autor:	D.O. Riska
Rok vydání:	2003
Předmět:	Quantum chromodynamics Physics Nuclear and High Energy Physics Meson Hadron Phenomenological model Nuclear force Order (ring theory) Interpretation (model theory) Volume integral Mathematical physics
Zdroj:	The European Physical Journal A. 18:201-205
ISSN:	1434-601X 1434-6001
DOI:	10.1140/epja/i2002-10299-9
Popis:	Expression of the nucleon-nucleon interaction to leading order in 1/N C in terms of Fermi invariants allows a dynamical interpretation of the interaction and a consistent construction of the associated interaction currents. The numerically significant components of 4 different modern realistic phenomenological interaction models admit very similar meson exchange interpretations in the large-N C limit. The ratio of the volume integrals of the leading, next-to-leading and next-to-next leading-order terms in these interaction models is roughly $300: 5\mbox{--}10: 0.1$ , which corresponds fairly well to the ratios of 1/N C 2 between the terms that would be suggested by the 1/N C expansion if N C = 3.
Databáze:	OpenAIRE
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