Comment on "Equation of state of dense and magnetized fermion system"
A. Y. Potekhin (1,2), D. G. Yakovlev (1,3) ((1) Ioffe, Physical-Technical Institute, Saint Petersburg, Russia, (2) CRAL (UMR CNRS, No. 5574), ENS-Lyon, France, (3) Saint-Petersburg State Polytechnical, University)
TL;DR
This paper critiques previous claims about neutron star magnetic fields and demonstrates that the magnetic field cannot surpass 10^{19} G, also showing the thermodynamic pressure remains isotropic in dense magnetized fermion gases.
Contribution
It challenges prior assertions on neutron star magnetic field limits and clarifies the isotropy of thermodynamic pressure in dense magnetized fermion systems.
Findings
Magnetic field of neutron stars cannot exceed 10^{19} G.
Thermodynamic pressure in dense magnetized fermion gases is isotropic.
Previous claims about higher magnetic fields are incorrect.
Abstract
Contrary to what is claimed by Ferrer et al. [Phys. Rev. C 82, 065802 (2010)], the magnetic field of a neutron star cannot exceed 10^{19} G and the thermodynamic pressure of dense magnetized fermion gas is isotropic.
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