Fourth order correlation of baryon number and electric charge as a better magnetometer of QCD
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| Main Authors: | , , , , , |
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| Format: | Preprint |
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2026
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| _version_ | 1866909043262488576 |
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| author | Mao, Shijun Yang, Shuai Lin, Sicheng Yang, Xinran Shao, Guoyun Zhang, Wen-Chao |
| author_facet | Mao, Shijun Yang, Shuai Lin, Sicheng Yang, Xinran Shao, Guoyun Zhang, Wen-Chao |
| contents | This work focuses on the fourth order correlations $χ^{BQ}_{31}$, $χ^{QB}_{31}$, $χ^{BQ}_{22}$, $χ^{BS}_{31}$, $χ^{SB}_{31}$, $χ^{BS}_{22}$, $χ^{QS}_{31}$, $χ^{SQ}_{31}$, $χ^{QS}_{22}$, $χ^{BQS}_{211}$, $χ^{QBS}_{211}$, $χ^{SBQ}_{211}$ of baryon number $B$, electric charge $Q$ and strangeness $S$ at finite temperature, magnetic field and vanishing quark chemical potential. The study is carried out in the framework of a three-flavor PNJL model, considering both cases with and without inverse magnetic catalysis effect. We find that, fourth order correlations $χ^{BQ}_{31}$ at chiral restoration phase transition is more sensitive to the magnetic field than other second order and fourth order correlations and fluctuations, and can be served as a more effective magnetometer of QCD. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2605_14674 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Fourth order correlation of baryon number and electric charge as a better magnetometer of QCD Mao, Shijun Yang, Shuai Lin, Sicheng Yang, Xinran Shao, Guoyun Zhang, Wen-Chao Nuclear Theory This work focuses on the fourth order correlations $χ^{BQ}_{31}$, $χ^{QB}_{31}$, $χ^{BQ}_{22}$, $χ^{BS}_{31}$, $χ^{SB}_{31}$, $χ^{BS}_{22}$, $χ^{QS}_{31}$, $χ^{SQ}_{31}$, $χ^{QS}_{22}$, $χ^{BQS}_{211}$, $χ^{QBS}_{211}$, $χ^{SBQ}_{211}$ of baryon number $B$, electric charge $Q$ and strangeness $S$ at finite temperature, magnetic field and vanishing quark chemical potential. The study is carried out in the framework of a three-flavor PNJL model, considering both cases with and without inverse magnetic catalysis effect. We find that, fourth order correlations $χ^{BQ}_{31}$ at chiral restoration phase transition is more sensitive to the magnetic field than other second order and fourth order correlations and fluctuations, and can be served as a more effective magnetometer of QCD. |
| title | Fourth order correlation of baryon number and electric charge as a better magnetometer of QCD |
| topic | Nuclear Theory |
| url | https://arxiv.org/abs/2605.14674 |