PT Journal
AU Vento, V
TI Confinement, the gluon propagator and the interquark potential for heavy mesons
SO European Physical Journal A
JI Eur. Phys. J. A
PY 2013
BP 71
EP 7pp
VL 49
IS 6
DI 10.1140/epja/i2013-13071-2
LA English
AB The interquark static potential for heavy mesons described by a massive one-gluon exchange interaction obtained from the propagator of the truncated Dyson-Schwinger equations does not reproduced the expected Cornell potential. I show that no formulation based on a finite propagator will lead to confinement of quenched QCD. I propose a mechanism based on a singular nonperturbative coupling constant which has the virtue of giving rise to a finite gluon propagator and (almost) linear confinement. The mechanism can be slightly modified to produce the screened potentials of unquenched QCD.
ER