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arXiv 1809.02133hep-phcond-mat.mes-hallhep-th
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超强磁场中的辐射自旋极化

Radiative spin polarization in an ultrastrong magnetic field

Koen van Kruining, Felix Mackenroth, Jörg B. Götte

摘要:

我们计算了电子在均匀磁场中的自旋翻转率($N\le 5$)。我们的结果适用于所有的场强,包括那些超过临界场强的自旋贡献尽可能多的电子的能量,其静止质量。现有的近似要么假设电子处于足够高的激发态,使得它的轨道可以被假设为经典的,要么假设磁场与临界场相比是弱的。因此,高磁场强度和低激励的范围很难被它们覆盖。通过比较我们的计算与不同的近似,我们发现,在高场,低激发区的自旋翻转率较低,平衡自旋极化是不纯的,那么一个人会得到天真地应用现有的近似在这个区域。

英文摘要:

We calculate the spin flip rates for an electron in a homogeneous magnetic field for low excitations ($N\le 5$). Our results apply for all field strengths including those beyond the critical field strength at which the spin contributes as much to the electron's energy as its rest mass. Existing approximations either assume that the electron is in a sufficiently highly excited state such that its orbit can be assumed to be classical or the magnetic field be weak compared to the critical field. The regime of high magnetic field strength and low excitations is therefore poorly covered by them. By comparing our calculations to different approximations, we find that in the high field, low excitation regime the spin flip rates are lower and the equilibrium spin polarization is less pure then one would get by naively applying existing approximations in this regime.

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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