Physics & Astronomy Faculty Publications
Document Type
Article
Publication Date
2-24-2026
Abstract
In this paper, we will demonstrate that a dense quark-matter system in the dual chiral density wave (DCDW) phase behaves as a ferromagnet in the sense that its magnetic-field dependent magnetization remains different from zero even at 𝐵 →0. The corresponding permanent magnetization is a function of the baryonic chemical potential 𝜇, decreasing up to zero as 𝜇 increases in the range of intermediate densities (312 MeV⩽𝜇⩽342 MeV) and then increasing from zero in the higher density interval 490 MeV⩽𝜇⩽550 MeV. We will show that this system’s ability to generate permanent magnetization, together with the existence of the axial anomaly, open up the possibility of spontaneously generating a magnetic field coupled to a collinear electric field. The generated magnetic field can reach values up to 1016 G, depending on 𝜇, and the electric field will be 3 orders smaller. The fact that the DCDW phase is able to induce a magnetic field can be seen as its spontaneous tendency to remove the so called Landau-Peierls instability that is present in this single-modulated phase in the absence of a magnetic field. The spontaneous induction of a strong magnetic field at intermediate to high densities can be of interest for the astrophysics of compact stellar objects exhibiting strong magnetic fields as magnetars.
Recommended Citation
Ferrer, E. J., and J. M. Perez-Fernandez. "Anomalous spontaneous induction of magnetic and electric fields in dense quark matter." Physical Review D 113, no. 3 (2026): 036023. https://doi.org/10.1103/ykdr-nwcy
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.
Publication Title
Physical Review D
DOI
10.1103/ykdr-nwcy
Comments
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