Abstract
We consider bound states of two baryons (antibaryons) in lattice QCD in a Euclidean formulation. For simplicity, we analyze an theory with a single flavor in 2+1 dimensions and two-dimensional Dirac matrices. For a small hopping parameter and large glueball mass, we recently showed the existence of a (anti)baryonlike particle, with an asymptotic mass of the order of and with an isolated dispersion curve, i.e., an upper gap property persisting up to near the meson-baryon threshold, which is of order Here, we show that there is no baryon-baryon (or antibaryon-antibaryon) bound state solution to the Bethe-Salpeter equation up to the two-baryon threshold, which is approximately
- Received 14 May 2003
DOI:https://doi.org/10.1103/PhysRevD.68.037501
©2003 American Physical Society