Higher Fock sectors in Wick-Cutkosky model

Details Higher Fock sectors in Wick-Cutkosky model Higher Fock sectors in Wick-Cutkosky model

2004-10-05

arxiv.org/abs/hep-th/0410050v1

Few Body Syst. 36 (2005) 155-159

Physics

High Energy Physics

High Energy Physics - Theory

4 pages, 2 figures, to appear in the proceedings of Light Cone 2004, Amsterdam, August 16-20, 2004

Scientific paper

10.1007/s00601-004-0093-8

In the Wick-Cutkosky model we analyze nonperturbatively, in light-front dynamics, the contributions of two-body and higher Fock sectors to the total norm and electromagnetic form factor. It turns out that two- and three-body sectors always dominate. For maximal value of coupling constant $\alpha=2\pi$, corresponding to zero bound state mass M=0, they contribute 90% to the norm. With decrease of $\alpha$ the two-body contribution increases up to 100%. The form factor asymptotic is always determined by two-body sector.

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