We consider a single 3-brane situated between two bulk spacetimes that possess the same cosmological constant, but whose metrics do not possess a Z2-symmetry. On each side of the brane, the bulk is a solution to Gauss-Bonnet gravity. This asymmetry modifies junction conditions, so new terms...
[2] Po, H. C. et al., "Symmetry-based indicators of band topology in the 230 space groups", Nat. Comm. 8, 50 (2017).[3] Z. Song et al., "Quantitative mappings between symmetry and topology in solids", Nat. Comm. 9, 3530 (2018).[4] Vergniory, M.G., et al., “A com...
Z2 TIs with Time-Reversal Symmetry 掷骰子的肖 关注 专栏/Z2 TIs with Time-Reversal Symmetry Z2 TIs with Time-Reversal Symmetry 2023年06月12日 18:50463浏览· 5点赞· 0评论 掷骰子的肖 粉丝:236文章:47 关注本文为我原创本文禁止转载或摘编 拓扑凝聚态 分享到: 投诉或建议 碧蓝航线限时活动「...
2012年陈协,顾正澄,刘正鑫和文小刚总结了前面的工作,用群论方法对固体中受对称性保护的各种拓扑态进行了分类研究,提出了SPT的概念(symmetry protected topological phase),又把这方面的研究推进了一大步。目前对凝聚态中各种SPT态的研究,是物理学领域内最活跃...
2012年陈协,顾正澄,刘正鑫和文小刚总结了前面的工作,用群论方法对固体中受对称性保护的各种拓扑态进行了分类研究,提出了SPT的概念(symmetry protected topological phase),又把这方面的研究推进了一大步。目前对凝聚态中各种SPT态的研究,是物理学领域内最活跃的研究热点之一,我们也将在后续文章中加以介绍。
This paper is concerned with an example of steady-state/steady-state mode interaction in two parameter nonlinear problems satisfying a Z2-symmetry (equivariance) condition. Specifically we analyze the solution structure near a point where a path of symmetry-breaking bifurcations and a path of fold ...
在《Time Reversal Symmetry & the Z2 Index 学习笔记》中,我们推导了Z2拓扑数,但是计算方法有点复杂。现在,让我们用Wilson loop法来计算Z2拓扑数! 本文参考如下文献 Z2拓扑不变量与拓扑绝缘体 网址:wuli.iphy.ac.cn/cn/arti Equivalent expression of Z2 topological invariant for band insulators using the...
Focusing first on the scalar potential of the model, the symmetry restricts its form (see Appendix A), and the vacuum of the model is fixed in terms of the mass parameters and the couplings to be:(2.1) where and are real, is in general complex, and . Moreover, the CP violating ...
it exhibits Z2-symmetry (symmetry under rotation through π [1], Section 7.3). The origin exhibits a Takens-Bogdanov bifurcation when η1=η2=0 [1], [2], [3], [12], [28]. There are two different cases σ=±1 of system (1) to be considered. Partial bifurcation sets for σ=+...
Z2 TIs with Time-Reversal Symmetry 掷骰子的肖 关注 专栏/Z2 TIs with Time-Reversal Symmetry Z2 TIs with Time-Reversal Symmetry 2023年06月12日 18:5017阅读· 2喜欢· 0评论 掷骰子的肖 粉丝:81文章:37 关注本文为我原创本文禁止转载或摘编 拓扑凝聚态 ...