Symmetry-Protected Topological Phases in the Triangular Majorana-Hubbard Ladder
Strongly Correlated Electrons
2026-04-29 v1
Abstract
We map the phase diagram of the triangular-lattice Majorana-Hubbard model on a four-leg ladder using DMRG and variational uniform matrix product states, revealing a richer variety of phases than previously known. Analysis of entanglement-spectrum degeneracies and adiabatic connections identifies multiple symmetry-protected topological (SPT) phases. These phases could be realized in arrays of vortex-bound Majorana modes on the surface of a topological superconductor.
Keywords
Cite
@article{arxiv.2604.24887,
title = {Symmetry-Protected Topological Phases in the Triangular Majorana-Hubbard Ladder},
author = {Will Holdhusen and Alberto Nocera and Jian-Xin Zhu and Armin Rahmani},
journal= {arXiv preprint arXiv:2604.24887},
year = {2026}
}