Anomalous Dynamical Screening of Relativistic Plasma in a Magnetic Field
Fuente:
arXiv
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| Autore principale: | |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866918404936433664 |
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| author | Hanai, Sota |
| author_facet | Hanai, Sota |
| contents | We study collective excitations in a relativistic collisionless plasma composed of massless fermions subject to an external magnetic field. We include dynamical electromagnetism and fluctuations of the chiral charge, while maintaining a vanishing net chiral charge. Within the framework of chiral kinetic theory, we find that the chiral anomaly gives a correction to the transverse photon self-energy and that a novel type of dynamical screening can emerge. In the strong magnetic field limit, we also show that the collective mode has a gap using the lowest Landau level approximation. We further discuss implications of the anomalous dynamical screening for neutron star phenomenology. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2509_16652 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Anomalous Dynamical Screening of Relativistic Plasma in a Magnetic Field Hanai, Sota High Energy Physics - Phenomenology High Energy Astrophysical Phenomena High Energy Physics - Theory Nuclear Theory We study collective excitations in a relativistic collisionless plasma composed of massless fermions subject to an external magnetic field. We include dynamical electromagnetism and fluctuations of the chiral charge, while maintaining a vanishing net chiral charge. Within the framework of chiral kinetic theory, we find that the chiral anomaly gives a correction to the transverse photon self-energy and that a novel type of dynamical screening can emerge. In the strong magnetic field limit, we also show that the collective mode has a gap using the lowest Landau level approximation. We further discuss implications of the anomalous dynamical screening for neutron star phenomenology. |
| title | Anomalous Dynamical Screening of Relativistic Plasma in a Magnetic Field |
| topic | High Energy Physics - Phenomenology High Energy Astrophysical Phenomena High Energy Physics - Theory Nuclear Theory |
| url | https://arxiv.org/abs/2509.16652 |