ACAD SINICA,INST THEORET PHYS,BEIJING 100080,PEOPLES R CHINA
The binding and dissolution for the and bound states are studied by using different quark binding potentials in a nonrelativistic approximation. We calculate the critical value of the screening length by considering the Debye screening effect. The critical value r(D)(c) of the Debye screening length is highly sensitive to the form of the quark binding potential. We also estimate the critical temperature T-c of medium. The influence of the form of the quark binding potentials on dissolution for and bound states is discussed and compared to the previous results.