Scaling of the quark-antiquark potential and improved actions in SU(2) lattice gauge theory

Quark-model study of few-baryon systems

“…In fact, the quadratic potential places the Roper resonance 1 GeV above the ground state (if its strength is fixed variationally as it is done in the RGM), while it appears in the correct position (but still inverted with respect to N * (1535)) with a linear potential. This favors a linear form for confinement as also suggested by meson spectroscopy and lattice calculations [160]. We should finally say that the level ordering problem has been cured by means of appropriate phenomenological interactions as has been the case of anharmonic terms [161], scalar three-body forces [162] or pseudoscalar interactions [45,163], but without any connection to a consistent simultaneous description of the baryon-baryon interaction except for reference [163].…”

Study of the leptonic decays of pseudoscalarB,Dand vectorB*,D*mesons and of the semileptonicAlbertus1, Hernández2, Nieves3 et al. 2005Phys. Rev. D

“…The potentials considered differ in the form factors used for the hyperfine terms, the power of the confining term (p = 1, as suggested by lattice QCD calculations [42], or p = 2/3 which gives the correct asymptotic Regge trajectories for mesons [43]), or the use of a form factor in the one gluon exchange Coulomb potential. [9] decays.…”

SU(2)βFunction with and without Dynamical Fermions

“…1. Included in the figure are A/3's as extracted from string-tension measurements 8,9 and measurements of the deconfinement transition temperature. 10,11 At /3 = 2.6 the prediction from a tree-level matching of a 16 4 lattice 12 to an 8 4 lattice is also shown.…”