Instantaneous Bethe-Salpeter equation: improved analytical solution

Details Instantaneous Bethe-Salpeter equation: improved analytical solution Instantaneous Bethe-Salpeter equation: improved analytical solution

2001-09-19

arxiv.org/abs/hep-ph/0109165v1

Int.J.Mod.Phys. A17 (2002) 2233

Physics

High Energy Physics

High Energy Physics - Phenomenology

7 pages

Scientific paper

10.1142/S0217751X0200976X

Studying the Bethe-Salpeter formalism for interactions instantaneous in the rest frame of the bound states described, we show that, for bound-state constituents of arbitrary masses, the mass of the ground state of a given spin may be calculated almost entirely analytically with high accuracy, without the (numerical) diagonalization of the matrix representation obtained by expansion of the solutions over a suitable set of basis states.

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