Cold equation of state in a strong magnetic field - Effects of inverse beta-decay

Details Cold equation of state in a strong magnetic field - Effects of inverse beta-decay Cold equation of state in a strong magnetic field - Effects of inverse beta-decay

Dec 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...383..745l&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 383, Dec. 20, 1991, p. 745-751.

Physics

Condensed Matter

117

Condensed Matter Physics, Electron Capture, Equations Of State, Neutron Stars, Stellar Magnetic Fields, Stellar Physics, Degenerate Matter, Electron Gas, Relativistic Particles, Weak Interactions (Field Theory)

Scientific paper

The influence of a high magnetic field (B is greater than 10 exp 12 G) on the degenerate matter equation of state appropriate to a neutron star is studied. The regime dominated by relativistic electrons up to the neutron drip density is highlighted. The equilibrium matter composition and equation of state, allowing for inverse beta-decay. Two different equilibrium models are determined: an ideal neutron-proton-electron (npe) gas and the more realistic model of Baym, Pethick, and Sutherland (1971) consisting of a Coulomb lattice of heavy nuclei embedded in an electron gas. For a sufficiently high field strength, the magnetic field has an appreciable effect, changing the adiabatic index of the matter and the nuclear transition densities. The influence of a strong field on some simple nonequilibrium processes, including beta-decay and inverse beta-decay (electron capture) is also considered. The effects produced by the magnetic field are mainly due to the changes in the transverse electron quantum orbits and the allowed electron phase space induced by the field.

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