具有破缺标度不变性的核物质混合手征孤子模型
A hybrid-chiral soliton model with broken scale invariance for nuclear matter
摘要：
我们提出了一个描述有限密度下核物质的模型，该模型基于夸克与手征场σ和π的相互作用。手征拉格朗日量还包括对数势，与尺度不变性的破坏相关联。我们提供的孤子在真空中，并在有限的密度，使用Wigner-Seitz近似的结果。我们表明，该模型可以达到更高的密度相对于线性西格玛模型，高达约3 rho_0的m_sigma=1200 MeV。
英文摘要：
We present a model for describing nuclear matter at finite density based on quarks interacting with chiral fields, sigma and pion. The chiral Lagrangian also includes a logarithmic potential, associated with the breaking of scale invariance. We provide results for the soliton in vacuum and at finite density, using the Wigner-Seitz approximation. We show that the model can reach higher densities respect to the Linear-sigma model, up to approximately 3 rho_0 for m_sigma=1200 MeV.
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