In this paper we discuss in some detail how the pressures determined from semi-classical statistical averaging of the energy momentum tensor in the presence of a uniform background magnetic field are anisotropic with different pressures arising along and perpendicular to the magnetic field direction. Hence, we analyze how this result can affect two important characteristics of dense magnetized systems: (i) The hadron-quark phase transition in the presence of a magnetic field, (ii) The behavior of the speed of sound in dense magnetized systems. Taking into account that large magnetic fields are expected to be present in the interior of neutron stars, we will stress the role the pressure anisotropy plays in the physics of these compact astronomical objects.
Ferrer, Efrain J., and Aric Hackebill. "The Importance of the Pressure Anisotropy Induced by Strong Magnetic Fields on Neutron Star Physics." Journal of Physics: Conference Series. Vol. 2536. No. 1. IOP Publishing, 2023. doi.org/10.1088/1742-6596/2536/1/012007
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Journal of Physics: Conference Series