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Electrons as quasi-bosons in magnetic white dwarfs

机译:电子作为磁性白矮星中的拟玻色子

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A white dwarf star achieves its equilibrium from the balancing of the gravitational compression against the Fermi degeneracy pressure of the electron gas. In field theory there are examples (e.g. the monopole-charge system) where a strong magnetic field can transform a boson into a fermion or a fermion into a boson. In some condensed matter systems (e.g. fractional quantum Hall systems) a strong magnetic field can transform electrons into effective fermions, or effective anyons. Based on these examples we investigate the possibility that the strong magnetic fields of some white dwarfs may transform some fraction of the electrons into effective bosons. This could have consequences for the structure of highly magnetized white dwarfs. It would alter the mass-radius relationship, and in certain instances one could envision a scenario where a white dwarf below the Chandrasekhar limit could nevertheless collapse into a neutron star due to a weakening of the electron degeneracy pressure. In addition the transformation of electrons into effective bosons could result in the electrons Bose condensing, which could speed up the cooling rate of white dwarfs. [References: 26]
机译:白矮星通过重力压缩与电子气的费米简并压力之间的平衡达到平衡。在场论中,有一些例子(例如单极电荷系统),其中强磁场可以将玻色子转换为费米子或将费米子转换为玻色子。在某些凝聚态系统(例如分数量子霍尔系统)中,强磁场可以将电子转换为有效的费米子或有效的任意子。根据这些例子,我们研究了某些白矮星的强磁场可能会将一部分电子转变为有效玻色子的可能性。这可能会对高度磁化的白矮星的结构产生影响。这将改变质量半径关系,并且在某些情况下可以预见一种情况,由于电子简并压力的减弱,低于Chandrasekhar极限的白矮星仍可能坍塌成中子星。另外,电子转化为有效的玻色子可能导致电子玻色凝聚,这可以加快白矮星的冷却速度。 [参考:26]

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