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arXiv 1005.2667hep-ph
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考虑非零流夸克质量的非均匀手征和2SC色超导相

Non-uniform chiral and 2SC color superconducting phases, taking into account the non-zero current quark mass

Tomasz L. Partyka

摘要:

我们证明了非均匀手征(NCh)和色超导(2SC)基态混合相存在的可能性与正则化方案的参数和类型的选择密切相关。我们的计算表明,在三维截止正则化方案中,对于一组广泛的NJL模型参数,存在NCh和2SC相的混合区域。然而,在Schwinger正则化方案中,如果将参数拟合到真空中的物理量,则不存在NCh和2SC相的混合区域。

英文摘要:

We have shown, that the possibility of the existence of the mixed phase of the non-uniform chiral (NCh) and the color superconducting (2SC) ground state depends significantly on the choice of the parameters and type of the regularization scheme. Our calculations indicates, that in the 3d cut-off regularization scheme, the mixed region of the NCh and the 2SC phases exists for a broad set of NJL model parameters. However, in the Schwinger regularization scheme, if parameters are fitted to the physical quantities in the vacuum, then, the mixed region of the NCh and the 2SC phases does not exists.

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