重夸克偶素的高阶变分微扰修正

设置含有变分参数的母哈密顿量作为零级哈密顿量，选择该母哈密顿量的精确解作为试探波函，对重夸克偶素基态利用基于积分方程的改进的变分微扰论，得到了只有几项的高阶修正波函数和高阶能量修正．它表明这种方法不仅可提高计算结果的精度而且可确保微扰级数的收敛性，我们的计算结果更接近精确值，修正波函数的收敛性得到改善．

Multi-Order variational-perturbation corrections for heavy quarkonium

Setting the female Hamiltonian including variational parameter as the Zero-order Hamiltonian and choosing the trial wave function is exactly solution of the female Hamiltonian.Applying the improved variational-perturbation method based on integral equation to heavy quarkonium in the ground states,we get the Multi-order corrected wave functions consisting of a few terms and calculate the Multi-order energy corrections.It is shown that improved variational-perturbation method can not onlyimprove precision of the result but also assure convergence of the wave function series,thus the calculation results are in good agreements with the exact data.The convergence of the perturbation series is also verified.