English

Topological analysis of the complex SSH model using the quantum geometric tensor

Strongly Correlated Electrons 2024-07-15 v2 Mesoscale and Nanoscale Physics

Abstract

This paper presents two methods for topological analysis of the complex Hermitian Su-Schrieffer-Heeger (SSH) model using the quantum geometric tensor: Berry phase and topological data analysis. We demonstrate how both methods can effectively generate topological phase diagrams for the model, revealing two distinct regions based on the relative magnitudes of the parameters v|v| and w|w|. Specifically, when v>w|v| > |w|, the system is found to be topologically trivial, whereas for v<w|v| < |w|, it exhibits topologically non-trivial behavior. Our results contribute to building the groundwork for topological analysis of more complicated SSH-type models.

Keywords

Cite

@article{arxiv.2308.04626,
  title  = {Topological analysis of the complex SSH model using the quantum geometric tensor},
  author = {Eve Cheng and Murray T. Batchelor and Danny Cocks},
  journal= {arXiv preprint arXiv:2308.04626},
  year   = {2024}
}

Comments

13 pages, 9 figures, revised and expanded version

R2 v1 2026-06-28T11:51:26.310Z