Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2000-11-19
Phys.Rev. D64 (2001) 036007
Physics
High Energy Physics
High Energy Physics - Phenomenology
12 Pages, LaTeX, 1 figure
Scientific paper
10.1103/PhysRevD.64.036007
The instantaneous Bethe-Salpeter equation, derived from the general Bethe-Salpeter formalism by assuming that the involved interaction kernel is instantaneous, represents the most promising framework for the description of hadrons as bound states of quarks from first quantum-field-theoretic principles, that is, quantum chromodynamics. Here, by extending a previous analysis confined to the case of bound-state constituents with vanishing masses, we demonstrate that the instantaneous Bethe-Salpeter equation for bound-state constituents with (definitely) nonvanishing masses may be converted into an eigenvalue problem for an explicitly - more precisely, algebraically - known matrix, at least, for a rather wide class of interactions between these bound-state constituents. The advantages of the explicit knowledge of this matrix representation are self-evident.
Lucha Wolfgang
Maung Khin Maung
Sch"oberl Franz F.
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