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arXiv 0709.0049hep-phastro-phhep-lathep-thnucl-th
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关于有限重子数密度下P-破坏的可能性

On the possibility of P-violation at finite baryon-number densities

A. A. Andrianov, D. Espriu

摘要:

我们展示了如何引进一个有限的重子密度可能会触发自发宇称破坏的强子阶段的QCD。由于这涉及到中等能量范围内的强相互作用物理,我们用一个σ模型来近似QCD,它保留了两个最低的标量和赝标量多重态。我们提出了一种新的机制的基础上的相互作用的最轻和最重的介子状态,不能实现单独的戈德斯通玻色子(π介子)部门,从而是无关的Migdal前一段时间所倡导的。我们的方法是相关的致密物质在中间制度的几个核密度夸克渗透还没有发挥重要作用。

英文摘要:

We show how the introduction of a finite baryon density may trigger spontaneous parity violation in the hadronic phase of QCD. Since this involves strong interaction physics in an intermediate energy range we approximate QCD by a σmodel that retains the two lowest scalar and pseudoscalar multiplets. We propose a novel mechanism based on interplay between lightest and heavy meson states which cannot be realized solely in the Goldstone boson (pion) sector and thereby is unrelated to the one advocated by Migdal some time ago. Our approach is relevant for dense matter in an intermediate regime of few nuclear densities where quark percolation does not yet play a significant role.

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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