Spontaneous Spin Polarization due to Tensor Selfenergies in Quark Matter

Abstract

We study the magnetic properties of quark matter in the NJL model with the tensor interaction. The spin-polarized phase given by the tensor interaction remains even when the quark mass is zero, while the phase given by the axial vector interaction disappears. There are two kinds of spin-polarized phases: one appears in the chiral-broken phase, and the other appears in the chiral-restored phase where the quark mass is zero. The latter phase can appear independently of the strength of the tensor interaction.

24 pages, 8 figures

References in corpus (7)

• Color superconductivity in dense quark matter
• Neutron Star Observations: Prognosis for Equation of State Constraints
• Physics of Strongly Magnetized Neutron Stars
• Dense Matter in Compact Stars: Theoretical Developments and Observational Constraints
• Effective Potential Approach to Quark Ferromagnetization in High Density Quark Matter
• Symmetry breaking effect on the inhomogeneous chiral transition in the magnetic field
• Spin polarization in high density quark matter under a strong external magnetic field

Cited by in corpus (6)

• Spin polarized phases in strongly interacting matter: interplay between axial-vector and tensor mean fields
• Vector-boson condensates, spin-triplet superfluidity of paired neutral and charged fermions, and $3P_2$ pairing of nucleons
• Spin polarizations under a pseudovector interaction between quarks with the Kobayashi-Maskawa-'t Hooft term in high density quark matter
• Hybrid stars from a three-flavor NJL model with two kinds of tensor condensates
• Non-zero tensor condensates in cold quark matter within the three-flavor Nambu-Jona-Lasinio model with the Kobayashi-Maskawa-'t Hooft interaction
• Axial-Vector and Tensor Spin Polarization and Chiral Restoration in Quark Matter