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我们导出了双圈图近似下QCD等效耦合常数的一个带有修正的表达式,它相当于在通常的表达式中增加了与重整化减除方案无关的、比Int/t更高次项的贡献。在此基础上,我们在动量表象和坐标表象中分别给出了一种既有渐近自由又满足线性禁闭假定的单一位势来描述重层子间的强相互作用,并且得到了大距离下线性禁闭位势的斜率k=4πΛ2/(33—2Nf)。我们还指出,在层子味数Nf固定之后,采用单一参数Λ来决定位势是可能的。 相似文献
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本文根据唯象QCD假定,层子间的强相互作用在非相对论近似下由线性位势和类库仑位势描述,并取层子-胶子间的等效耦合常数具有QCD的渐近自由极限。文中由J/φ和γ的零点波函数与质量的实验值定出位势参数,继而对φ’和γ’进行了计算。结果表明,这些粒子零点波函数的相对值和质量可以得到统一的说明。 相似文献
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We study a typical complete gluonic phase (LGP) in two-flavour colour superconductivity (2SC) by calculating the essential cubic and quartic interfering term between the gluonic condensates (Az^(8)) and/Az^(6)) with a gauged NJL model. It is proven that the coefficients of the cubic interfering term and the vacuum contributions of the cubic and quartic interfering term are all equal to zeroes. The coefficients of the quartic interfering term and the /Az^(6)) 's quartic self-interaction term at stationary points of Larkin-Ovchinnikov-Fulde-Ferrell (LOFF) phase are calculated. Comparisons among the effective potentials of LOP, g2SC and LOFF phase indicate that LOP could be the genuine ground state of 2SC for some reasonable paxameters. 相似文献
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