Weak binding limit and non zero angular momentum states in Light-Front Dynamics

Details Weak binding limit and non zero angular momentum states in Light-Front Dynamics Weak binding limit and non zero angular momentum states in Light-Front Dynamics

2000-08-31

arxiv.org/abs/hep-th/0008243v1

Nucl.Phys.Proc.Suppl.90:123-126,2000

Physics

High Energy Physics

High Energy Physics - Theory

To appear in Nucl.Phys.B, 6 pages, 3 figures, .tar.gz file

Scientific paper

10.1016/S0920-5632(00)00885-9

We show some results concerning the weak binding limit for J=0 states -- which turn out to strongly differ from the non relativistic case -- together with the construction of non zero angular momentum states. The calculation of such states in the Light-Front Dynamics (LFD) framework has some peculiarities which are absent in other approaches. They are related to the fact that the rotation generators contain interaction. We present here the construction of non zero angular momentum states in LFD and show how it leads to a restoration of rotational invariance. For this purpose, the use of Light-Front Dynamics in its explicitly covariant formulation is of crucial importance since the dependence of the wave function on the light-front plane is explicitly parametrized.

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