Abstract
The correlation between net baryon number and electric charge, , can serve as a magnetometer of QCD. This is demonstrated by lattice QCD computations using the highly improved staggered quarks with physical pion mass of on and 12 lattices. We find that along the transition line starts to increase rapidly with magnetic field strength and by a factor 2 at . Furthermore, the ratio of electric charge chemical potential to baryon chemical potential, , shows significant dependence on the magnetic field strength and varies from the ratio of electric charge to baryon number in the colliding nuclei in heavy ion collisions. These results can provide baselines for effective theory and model studies, and both and could be useful probes for the detection of magnetic fields in relativistic heavy ion collision experiments as compared with corresponding results from the hadron resonance gas model.
- Received 19 December 2023
- Revised 18 March 2024
- Accepted 23 April 2024
DOI:https://doi.org/10.1103/PhysRevLett.132.201903
Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.
Published by the American Physical Society