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Condensed Matter > Strongly Correlated Electrons
Title: Three-body bound states in antiferromagnetic spin ladders
(Submitted on 2 Dec 2020 (v1), last revised 13 Sep 2022 (this version, v2))
Abstract: Stable bound quantum states are ubiquitous in nature. Mostly, they result from the interaction of only pairs of particles, so called two-body interactions, even when large complex many-particle structures are formed. We show that three-particle bound states occur in a generic, experimentally accessible solid state system: antiferromagnetic spin ladders, related to high-temperature superconductors. This binding is induced by genuine three-particle interactions; without them there is no bound state. We compute the dynamic exchange structure factor required for the experimental detection of the predicted state by resonant inelastic X-ray scattering for realistic material parameters. Our work enables us to quantify these elusive interactions and unambiguously establishes their effect on the dynamics of the quantum many-particle state.
Submission history
From: Benedikt Fauseweh PhD [view email][v1] Wed, 2 Dec 2020 20:36:20 GMT (2109kb,AD)
[v2] Tue, 13 Sep 2022 19:26:46 GMT (1768kb,D)
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