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arXiv 1111.0681hep-phnucl-th
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热密物质中的手征对称性破缺、迹反常和重子

Chiral Symmetry Breaking, Trace Anomaly and Baryons in Hot and Dense Matter

Chihiro Sasaki

摘要:

我们提出了一个有效的手征拉格朗日量,并引入手征标量作为与共形对称破缺有关的、导致量子色动力学中迹反常的子,讨论了高密度和温度下强子物质的性质.当取“狄龙极限”时,它将系统从核物质密度驱动到接近手征恢复密度,线性西格玛模型从高度非线性结构中出现。一个惊人的预测是,当接近介子极限时,ω-核子相互作用在高密度下被强烈抑制。这被证明是一个坚定的声明,在量子水平上的红外不动点的手征微扰理论推导的重整化群方程的保护。

英文摘要:

We propose an effective chiral Lagrangian with a chiral scalar introduced as a dilaton associated with broken conformal symmetry and responsible for the trace anomaly in QCD and discuss the properties of hadronic matter at high density and temperature. As the "dilaton limit" is taken, which drives a system from nuclear matter density to near chiral restoration density, a linear sigma model emerges from the highly non-linear structure. A striking prediction is that as the dilaton limit is approached, the omega-nucleon interaction gets strongly suppressed at high density. This is shown to be a firm statement at the quantum level protected by an infrared fixed point of the renormalization group equations derived in chiral perturbation theory.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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