The response of non-relativistic confined systems

Details The response of non-relativistic confined systems The response of non-relativistic confined systems

1993-03-14

arxiv.org/abs/nucl-th/9303009v1

Phys.Rev.C47:2901-2909,1993

Physics

Nuclear Physics

Nuclear Theory

18 p. WIS-92/102/Dec PH

Scientific paper

10.1103/PhysRevC.47.2901

We study the non-relativistic response of a 'diquark' bound by confining forces, for which perturbation theory in the interaction fails. As non-perturbative alternatives we consider the Gersch-Rodriguez-Smith theory and a summation method. We show that, contrary to the case of singular repulsive forces, the GRS theory can generally be applied to confined systems. When expressed in the GRS-West kinematic variable y, the response has a standard asymptotic limit and calculable dominant corrections of orders 1/q,1/q. That theory therefore clearly demonstrates how constituents, confined before and after the absorption of the transferred momentum and energy, behave as asymptotically free particles. We compare the GRS results with those for a summation method for harmonic and square well confinement and also discuss the convergence of the GRS series for the response in powers of 1/q.

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