A Novel Phase Diagram for a Spin-1 System Exhibiting a Haldane Phase
POSTER
Abstract
We provide the phase diagram of a 2-parameter spin-1 chain that has a symmetry-protected topological (SPT) Haldane phase using computational algorithms along with tensor-network tools.
We improve previous results, showing the existence of a new phase and new triple points. New striking features are the triple end of the Haldane phase and the complexity of phases bordering the Haldane phase in proximity—allowing moving to nearby non-SPT phases via small perturbations. These characteristics make the system, which appears in Rydberg excitons, e.g. in Cu2O, a prime candidate for applications.
We improve previous results, showing the existence of a new phase and new triple points. New striking features are the triple end of the Haldane phase and the complexity of phases bordering the Haldane phase in proximity—allowing moving to nearby non-SPT phases via small perturbations. These characteristics make the system, which appears in Rydberg excitons, e.g. in Cu2O, a prime candidate for applications.
Publication: https://arxiv.org/pdf/2406.19372
Presenters
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Mohamad Mousa
Purdue University
Authors
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Mohamad Mousa
Purdue University
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Birgit B Kaufmann
Purdue University
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Sabre Kais
North Carolina State University, Purdue University, Department of Chemistry, Purdue University, West Lafayette, IN 47907 & Department of Electrical and Computer Engineering, North Carolina State University Raleigh, NC, 2760
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Shawn Cui
Purdue University West Lafayette
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Ralph Kaufmann
Purdue