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arXiv 1409.3454hep-phnucl-th
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磁场作用下热密夸克物质的CP破坏和手征对称性破缺

CP violation and chiral symmetry breaking in hot and dense quark matter in presence of magnetic field

Bhaswar Chatterjee, Hiranmaya Mishra, Amruta Mishra

摘要:

研究了在恒定磁场作用下,强相互作用物质的相图中的手征对称性破缺和强CP破坏效应。在一个包含Kobayashi-Maskawa-t 'Hooft(KMT)行列式项的三味Nambu-Jona-Lasinio(NJL)模型中,研究了有限温度和有限密度下磁场和强CP破坏项对相结构的影响.本文用显式变分方法研究了含夸克反夸克对的基态在标量和赝标通道中的凝聚。磁场增强了两个通道中的冷凝物。在零温度和小磁场条件下,发现了有限化学势下CP相变的逆磁催化作用。

英文摘要:

We investigate chiral symmetry breaking and strong CP violation effects on the phase diagram of strongly interacting matter in presence of a constant magnetic field. The effect of magnetic field and strong CP violating term on the phase structure at finite temperature and density is studied within a three flavor Nambu-Jona-Lasinio (NJL) model including the Kobayashi-Maskawa-t'Hooft (KMT) determinant term. This is investigated using an explicit variational ansatz for ground state with quark anti-quark pairs leading to condensates both in scalar and pseudoscalar channels. Magnetic field enhances the condensate in both the channels. Inverse magnetic catalysis for CP transition at finite chemical potential is seen for zero temperature and for small magnetic fields.

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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