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| Main Authors: | , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2412.15949 |
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| _version_ | 1866912396757434368 |
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| author | Fu, Wei-jie Pawlowski, Jan M. Pisarski, Robert D. Rennecke, Fabian Wen, Rui Yin, Shi |
| author_facet | Fu, Wei-jie Pawlowski, Jan M. Pisarski, Robert D. Rennecke, Fabian Wen, Rui Yin, Shi |
| contents | Dense QCD matter may exhibit crystalline phases. Their existence is reflected in a moat regime, where mesonic correlations feature spatial modulations. We study the realtime properties of pions at finite temperature and density in QCD in order to elucidate the nature of this regime. We show that the moat regime arises from particle-hole-like fluctuations near the Fermi surface. This gives rise to a characteristic peak in the spectral function of the pion at nonzero \emph{spacelike} momentum. This peak can be interpreted as a new quasi particle, the moaton. In addition, our framework also allows us to directly test the stability of the homogeneous chiral phase against the formation of an inhomogeneous condensate in QCD. We find that the formation of such a phase is highly unlikely for baryon chemical potentials $μ_B \leq 630$\,MeV. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2412_15949 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | The QCD moat regime and its real-time properties Fu, Wei-jie Pawlowski, Jan M. Pisarski, Robert D. Rennecke, Fabian Wen, Rui Yin, Shi High Energy Physics - Phenomenology High Energy Physics - Theory Nuclear Theory Dense QCD matter may exhibit crystalline phases. Their existence is reflected in a moat regime, where mesonic correlations feature spatial modulations. We study the realtime properties of pions at finite temperature and density in QCD in order to elucidate the nature of this regime. We show that the moat regime arises from particle-hole-like fluctuations near the Fermi surface. This gives rise to a characteristic peak in the spectral function of the pion at nonzero \emph{spacelike} momentum. This peak can be interpreted as a new quasi particle, the moaton. In addition, our framework also allows us to directly test the stability of the homogeneous chiral phase against the formation of an inhomogeneous condensate in QCD. We find that the formation of such a phase is highly unlikely for baryon chemical potentials $μ_B \leq 630$\,MeV. |
| title | The QCD moat regime and its real-time properties |
| topic | High Energy Physics - Phenomenology High Energy Physics - Theory Nuclear Theory |
| url | https://arxiv.org/abs/2412.15949 |