夸克物质中张量自能引起的自发自旋极化
Spontaneous Spin Polarization due to Tensor Selfenergies in Quark Matter
摘要：
本文研究了具有张量相互作用的NJL模型中夸克物质的磁性。由张量相互作用给出的自旋极化相位即使在夸克质量为零时也保持不变，而由轴向矢量相互作用给出的相位消失。自旋极化相有两种：一种出现在手征断裂相，另一种出现在夸克质量为零的手征恢复相。后一个相位可以独立于张量相互作用的强度出现。
英文摘要：
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.
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