Showing 1999Show all
2 papers · 1 filter
hep-th1999
Two and three-fermion 3D equations deduced from Bethe-Salpeter equations
J. Bijtebier
We write a 3D equation for three fermions by combining the three two-body potentials obtained in 3D reductions (based on a series expansion around a relative-energy fixing "approxi…
hep-th1999
Higher-order corrections to the two and three-fermion Salpeter equations
J. Bijtebier
We compare two opposite ways of performing a 3D reduction of the two-fermion Bethe-Salpeter equation beyond the instantaneous approximation and Salpeter's equation. The more usual…