2008/04/18 by Pengtao Yue, P. Yue, Hong Shen +1 · 1 citation
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Condensation #Condensed matter physics #Equation of state #Magnetic field #Mean field theory #Meson #Neutron star #Nuclear matter #Nuclear physics #Nucleon #Particle physics #Physics #Pulsars and Gravitational Waves Research #Quantum electrodynamics #Quantum mechanics #Quantum, superfluid, helium dynamics #Quark #Scalar (mathematics) #Thermodynamics #nucl-th
paper · pdf · doi:10.1103/physrevc.77.045804
published as Phys.Rev.C77:045804,2008 · 23 pages, 6 figures
arxiv created 2008/04/18 · openalex publication_date 2008/04/25 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We study the effects of strong magnetic fields on antikaon condensation in neutron star matter using the quark-meson coupling (QMC) model. The QMC model describes a nuclear many-body system as nonoverlapping MIT bags in which quarks interact through the self-consistent exchange of scalar and vector mesons in the mean-field approximation. It is found that the presence of strong magnetic fields alters the threshold density of antikaon condensation significantly. The onset of K^\ensuremath- condensation stronger depends on the magnetic field strength, and it even shifts beyond the threshold of K0 condensation for sufficiently strong magnetic fields. In the presence of strong magnetic fields, the equation of state (EOS) becomes stiffer in comparison with the field-free case. The softening of the EOS by antikaon condensation also depends on the magnetic field strength, and it becomes less pronounced with increasing magnetic field strength. The results of the QMC model are compared with those obtained in a relativistic mean-field (RMF) model, and we find there are quantitative differences between the results of the QMC and RMF models.