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在两种参数下计算了(s,t)=(0,1),(1,0),l=0.2NN散射相移, 分析了qq相互作用中各项和各种交换过程对核力的短程排斥的贡献. 相似文献
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本文描述了在通常的夸克势模型中的夸克蜕定域、色屏蔽及核力特性,对所得核子—核子绝热近似势和散射相移进行了定性描述:既有排斥心,又有中程吸引,但没有Van der Waals力问题,变分给出蜕定域的数值也是合理的,对质心运动效应、色屏蔽形式的影响以及各种单夸克基矢的关系和选择问题进行了专门的研究。 We introduce the quark delocalization and color screening into the usual quark modeland the property of nuclear force. The resulting N-N phase shifts and the adiabatic potential aredescribed qualitatively well: there are exclusion core and also intermediate range attraction, but thereis no Van der Waals force. The delocalization parameter obtained from variational method is alsoreasonable. we consider especially the effect of mass center motion, the effect of forms of colorscreening... 相似文献
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本文提出了一个新的夸克势模型──夸克脱定域色屏蔽模型.此模型不用介子交换就给出既有排斥心又有中程吸引的核力,并且定性符合N-N散射相移1S0、3S1、1P1和3P1a首次从动力学证明了可能存在两类双重子.一类是像氘核那样的低自旋、弱束缚的双重子,另一类是高自旅、强束缚的六夸克态,d就是一个典型例子,它很可能是一个窄双重子共振态.一个平行的相对论性夸克势模型证实了与上述非相对论势模型有关的双重子态的预言. A new quark potential model, called quark delocalization and color screening model, has been proposed.This model yields both N-N repulsive core and intermediate range attraction without involving the meson exchange and fits the N-N 1S0,3S1,1p1and 3Pls phase shifts qualitatively. It verified dynamically that there might be two kinds of dibaryons.One is the deuteron like low spin, loosely binding two baryon states.The other is the high spin, strong binding six quark states, d. is a typical example and is... 相似文献
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