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arXiv 0904.2164hep-phastro-ph.HEgr-qchep-thnucl-th
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磁场中稠密相对论物质费米面的手征不对称性

Chiral asymmetry of the Fermi surface in dense relativistic matter in a magnetic field

E. V. Gorbar, V. A. Miransky, I. A. Shovkovy

摘要:

结果表明,在磁场中的相对论性致密物质中,存在着与相反手征费米子色散关系中的纵向动量的相对移动有关的对轴向电流的贡献。与最近在文献中讨论的最低朗道能级的轴向电流中的拓扑贡献不同,动力学贡献只出现在相互作用的物质中,并影响所有朗道能级中的费米子,包括费米表面周围的费米子。感应轴向电流和左右手费米子费米面的位移对各种致密星的物质输运和发射性质以及重离子碰撞都有重要的影响。

英文摘要:

It is revealed that in dense relativistic matter in a magnetic field, there exists a contribution to the axial current associated with a relative shift of the longitudinal momenta in the dispersion relations of opposite chirality fermions. Unlike the topological contribution in the axial current at the lowest Landau level, recently discussed in the literature, the dynamical one appears only in interacting matter and affects the fermions in all Landau levels, including those around the Fermi surface. The induced axial current and the shift of the Fermi surfaces of the left-handed and right-handed fermions are expected to play an important role in transport and emission properties of matter in various types of compact stars as well as in heavy ion collisions.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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