论文标题
积极的重子频谱和杂交重子的作用
The Positive-Parity Baryon Spectrum and the Role of Hybrid Baryons
论文作者
论文摘要
我们使用各向同性三叶草动作在两个pion块中计算出正值$δ$和$ n $的低凹光谱，并通过在蒸馏框中的普遍变量方法应用。光谱表现出使用各向异性三叶草晶格在先前计算中观察到的一般特征，其状态至少与夸克模型一样丰富。此外，我们确定了本质上是混合的状态，在这种状态下，gluonic自由度起着结构性的作用，表明这种状态似乎是激动的巴赛光谱的特征，无论是晶格动作还是晶格的精确细节，或者用来确定此类状态的晶格插入器的涂抹细节。
We calculate the low-lying spectra for the positive-parity $Δ$ and $N$ at two pion masses of 358 and 278 MeV using an isotropic clover action with two degenerate light-quaark and one strange-quark flavors through the application of the generalized variational method within the distillation framework. The spectrum exhibits the general features observed in previous calculations using an anisotropic clover lattice, with a counting of states at least as rich as the quark model. Furthermore, we identify states that are hybrid in nature, where gluonic degrees of freedom play a structural role, indicatinng that such states appear a feature of the excited baryon spectrum, irrespective of the lattice action, or the precise details of the smearing of the lattice interpolating operators used to identify such states.
