...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Physica, C. Superconductivity and its applications >From second quantization to the BCS Hamiltonian
【24h】

From second quantization to the BCS Hamiltonian

机译：从第二次量化到BCS哈密顿量

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Under the conditions k' + k = 0 and sigma' + sigma = 0 one can straightforwardly derive the Bardeen-Cooper-Schrieffer (BCS) Hamiltonian from the second quantization Hamiltonian of a fermion system. The condition k' + k = 0 can statistically be understood as a simplified mathematical summary of the fact that the total momentum of the fermion system is zero with respect to the center of mass. Based on the Pauli exclusion principle, the BCS Hamiltonian has been reinterpreted, in which V(k', k) is understood as the interaction between an electron and a hole and naturally becomes attractive in the particle-hole channel without invoking phonons, while the interaction between two electrons or in the particle-particle channel is still repulsive other than attractive. With the reinterpretation and without the concept of Cooper's pairing, the BCS theory is found to remain valid for conventional superconductivity. It is thus suggested that the concept of Cooper's pairing be removed from superconductivity. By doing so many of the conflicts currently existing in the superconductivity community would automatically disappear. It is emphasized that the proposed reinterpretation is essential for unifying the description of low- and high-temperature superconductivity and further for developing a unified theory of superconductivity. (C) 2001 Elsevier Science BN. All rights reserved. [References: 13]
机译：在k'+ k = 0且sigma'+ sigma = 0的条件下，可以直接从费米子系统的第二个量化哈密顿量中得出Bardeen-Cooper-Schrieffer（BCS）哈密顿量。从统计学上可以将条件k'+ k = 0理解为以下事实的简化数学总结：费米子系统的总动量相对于质心为零。基于保利排斥原理，对BCS哈密顿量进行了重新解释，其中V（k'，k）被理解为电子与空穴之间的相互作用，并且在不激发声子的情况下自然在粒子-空穴通道中变得有吸引力。除吸引力外，两个电子之间或在粒子-粒子通道中的相互作用仍然是排斥的。通过重新解释并且没有库珀配对的概念，发现BCS理论对于常规超导仍然有效。因此建议从超导性中删除库珀配对的概念。通过这样做，超导社区中当前存在的许多冲突将自动消失。要强调的是，提出的重新解释对于统一低温和高温超导性的描述以及进一步发展统一的超导性理论至关重要。 （C）2001 Elsevier Science BN。版权所有。 [参考：13]

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号