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arXiv 2501.04261hep-phhep-lathep-thnucl-th
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压力下QCD的$θ$角物理:奇异与同位旋相图

On the $θ$-angle physics of QCD under pressure: The strange and isospin phase diagram

Jahmall Bersini, Alessandra D'Alise, Clelia Gambardella, Francesco Sannino

AI总结:

本文研究非零同位旋与奇异化学势下QCD的$θ$角相图,确定相边界、相变性质、序参量和谱,并发现$θ=π$附近保持宇称的新超流相。

摘要:

我们揭示了在三种轻味及不同夸克质量比情形下,$θ$角对非零同位旋和奇异化学势下QCD相图的影响。我们确立了相边界以及相关相变的性质,确定了不同相中的序参量和物理谱。我们进一步阐明了$θ=π$附近的物理,并在该处发现了一种新的保持宇称的超流相。最后,我们讨论了改变轻味数量时超流相中的Dashen现象。

英文摘要:

We unveil the impact of the $θ$-angle on the QCD phase diagram at nonzero isospin and strangeness chemical potentials for three light flavors and different quark mass ratios. We establish the phase boundaries as well as the nature of the associated phase transitions. The order parameters and the physical spectrum in the different phases are determined. We further elucidate the physics around $θ=π$ where we discover a novel parity-preserving superfluid phase. Finally, we comment on Dashen's phenomenon in the superfluid phases when varying the number of light flavors.

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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