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arXiv · 1904.05768

Permanent mean spin source of the chiral magnetic effect in neutron stars

Maxim Dvornikov·Victor B. Semikoz
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Abstract

We suggest the generalization of the Anomalous Magneto-Hydro-Dynamics (AMHD) in the chiral plasma of a neutron star (NS) accounting for the mean spin in the ultrarelativistic degenerate electron gas within the magnetized NS core as a continuing source of the chiral magnetic effect. Using the mean field dynamo model generalized in AMHD, one can obtain the growth of a seed magnetic field up to $10^{18}\,\text{G}$ for an old non-superfluid NS at its neutrino cooling era $t < 10^6\,\text{yr}$, while neglecting any matter turbulence within its core and assuming the rigid NS rotation. The application of the suggested approach to the evolution of magnetic fields observed in magnetars, $B\sim 10^{15}\,\text{G}$, should be self-consistent with all approximations used in the suggested laminar dynamo, at least, up to the jumps of growing fields.

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Maxim Dvornikov, Victor B. Semikoz. 2019-04-09. Permanent mean spin source of the chiral magnetic effect in neutron stars. https://doi.org/10.1088/1475-7516%2F2019%2F06%2F053

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