摘要
本文应用具有可解准确基态的Hamiltonians,准确计算了Naive和Susskind格点Schwinger模型的无穷长弦弦张力,结果均为(1/2)e^2.这表明格点Schwinger模型给出线性禁闭势,并且当α→0时没有解除禁闭的相变发生,与连续理论符合.同时,由于Naive费米子方案得到的结果与Susskind方案的一致,从而说明自由粒子能谱的“加倍问题”至少对相互作用理论中某些物理量的计算没有影响.
In this paper string tensions of both the modified Naive and Susskind lattice Schwinger models which have the solvable exact ground states are calculated exactly. The linear potential between quark and antiquark infinitely seperated is derived for both Naive and Susskind lattice Schwinger models. No phase transition occurs when a tends to zero and this coincides with the continum theory.
出处
《高能物理与核物理》
CSCD
北大核心
1989年第9期860-864,共5页
High Energy Physics and Nuclear Physics
