Related papers: Parity order as a fundamental driver of bosonic topology

Parity order as a fundamental driver of bosonic topology

URL: http://arxiv.org/abs/2512.25011v1
Date: Wed, 31 Dec 2025 17:58:45 GMT
Title: Parity order as a fundamental driver of bosonic topology
Authors: Ashirbad Padhan, Harsh Nigam,
Abstract summary: We show that parity order coupled to bond dimerization--acts as a fundamental driver of bosonic topology.<n>Our results establish parity order as a new organizing principle for correlation-driven bosonic topology.
Score: 0.0
License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Abstract: Symmetry-protected topological (SPT) phases in interacting bosonic systems have been extensively studied, yet most realizations rely on fine-tuned interactions or enlarged symmetries. Here we show that a qualitatively different mechanism--parity order coupled to bond dimerization--acts as a fundamental driver of bosonic topology. Using density matrix renormalization group simulations, we identify two distinct topological phases absent in the purely dimerized model: an SPT phase at half filling stabilized by positive parity coupling, and a topological phase at unit filling stabilized by negative coupling that can be adiabatically connected to a trivial phase without breaking any symmetry. Our results establish parity order as a new organizing principle for correlation-driven bosonic topology.

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