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| Main Authors: | , , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2510.01066 |
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| _version_ | 1866912621114949632 |
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| author | Stoll, Jonas Zorbach, Niklas Braun, Jens |
| author_facet | Stoll, Jonas Zorbach, Niklas Braun, Jens |
| contents | We study the renormalization group flow of the scale-dependent effective potential of a quark-diquark model with full field dependence at nonzero chemical potential. This includes a discussion of approximations in relation to complex bosonic fields and the Silver-Blaze property. The resulting flow equation for the scale-dependent effective potential can in principle be solved down to the infrared limit. For our quark-diquark model, which may serve as a low-energy model for dense strong-interaction matter, we find that a competition between the Bardeen-Cooper-Schrieffer singularity and bosonic fluctuations can trigger a first-order phase transition at low temperatures that turns into a second-order phase transition at a tricritical point as the temperature increases. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2510_01066 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Nonperturbative fluctuation effects of charged bosonic fields: A quark-diquark model study at nonzero density Stoll, Jonas Zorbach, Niklas Braun, Jens High Energy Physics - Phenomenology Superconductivity Nuclear Theory We study the renormalization group flow of the scale-dependent effective potential of a quark-diquark model with full field dependence at nonzero chemical potential. This includes a discussion of approximations in relation to complex bosonic fields and the Silver-Blaze property. The resulting flow equation for the scale-dependent effective potential can in principle be solved down to the infrared limit. For our quark-diquark model, which may serve as a low-energy model for dense strong-interaction matter, we find that a competition between the Bardeen-Cooper-Schrieffer singularity and bosonic fluctuations can trigger a first-order phase transition at low temperatures that turns into a second-order phase transition at a tricritical point as the temperature increases. |
| title | Nonperturbative fluctuation effects of charged bosonic fields: A quark-diquark model study at nonzero density |
| topic | High Energy Physics - Phenomenology Superconductivity Nuclear Theory |
| url | https://arxiv.org/abs/2510.01066 |