On the behaviour and stability of superconducting currents

On the behaviour and stability of superconducting currents
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关于超导电流的行为和稳定性

DOI:
10.1016/s0550-3213(02)01028-3
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发表时间:
2002
期刊:
Nuclear Physics
影响因子:
--
通讯作者:
E. Shellard
E. Shellard
中科院分区:
--
文献类型:
--
作者:
Y. Lempérière;E. Shellard

文献摘要

被引文献

相似文献

本文给出了经典U(1)×U(1)模型中超导弦上电流演化的解析和数值结果。我们推导出这些字符串上的电流和电荷的能量泛函,建立严格的最小值应该存在于这个模型中的循环有限大小(vortons),如果电荷和电流都存在于世界表。然后,我们研究这些字符串上的电流的稳定性,我们发现一个分析标准的发病不稳定性(在中性极限)。该限制指定了比先前启发式估计更低的最大电流。最后,我们讨论了在所考虑的模型中,循环向其最终的vorton状态的演变。
We present analytic and numerical results for the evolution of currents on superconducting strings in the classical U(1)×U(1) model. We derive an energy functional for the currents and charges on these strings, establishing rigorously that minima should exist in this model for loops of finite size (vortons) if both charge and current are present on the worldsheet. We then study the stability of the currents on these strings, and we find an analytic criterion for the onset of instability (in the neutral limit). This limit specifies a lower maximal current than previous heuristic estimates. We conclude with a discussion of the evolution of loops towards their final vorton state in the model under consideration.