تقرير
Bosonic orbital Su-Schrieffer-Heeger model in a lattice of rings
| العنوان: | Bosonic orbital Su-Schrieffer-Heeger model in a lattice of rings |
|---|---|
| المؤلفون: | Nicolau, Eulàlia, Marques, Anselmo M., Mompart, Jordi, Dias, Ricardo G., Ahufinger, Verònica |
| سنة النشر: | 2023 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Quantum Gases |
| الوصف: | We study the topological properties of interacting and non-interacting bosons loaded in the orbital angular momentum states $l=1$ in a lattice of rings with alternating distances. At the single-particle level, the two circulation states within each site lead to two decoupled Su-Schrieffer-Heeger lattices with correlated topological phases. We characterize the topological configuration of these lattices in terms of the alternating distances, as well as their single-particle spectrum and topologically protected edge states. Secondly, we add on-site interactions for the two-boson case, which lead to the appearance of multiple bound states and edge bound states. We investigate the doublon bands in terms of a strong-link model and we analyze the resulting subspaces using perturbation theory in the limit of strong interactions. All analytical results are benchmarked against exact diagonalization simulations. Comment: 12 pages, 8 figures |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/2305.07008 |
| رقم الأكسشن: | edsarx.2305.07008 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |