Patrick, K, Caudrelier, V, Papić, Z et al. (1 more author) (2019) Interaction distance in the extended XXZ model. Physical Review B, 100 (23). 235128. ISSN 2469-9969
Abstract
We employ the interaction distance to characterize the physics of a one-dimensional extended XXZ spin model, whose phase diagram consists of both integrable and nonintegrable regimes, with various types of ordering, e.g., a gapless Luttinger liquid and gapped crystalline phases. We numerically demonstrate that the interaction distance successfully reveals the known behavior of the model in its integrable regime. As an additional diagnostic tool, we introduce the notion of “integrability distance” and particularize it to the XXZ model to quantity how far the ground state of the extended XXZ model is from being integrable. This distance provides insight into the properties of the gapless Luttinger liquid phase in the presence of next-nearest-neighbor spin interactions which break integrability.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2019, American Physical Society. Reproduced in accordance with the publisher's self-archiving policy. |
Keywords: | cond-mat.str-el; cond-mat.str-el; math-ph; math.MP; quant-ph |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Physics and Astronomy (Leeds) > Theoretical Physics (Leeds) |
Funding Information: | Funder Grant number EPSRC EP/R020612/1 |
Depositing User: | Symplectic Publications |
Date Deposited: | 14 Jan 2020 09:29 |
Last Modified: | 14 Jan 2020 09:29 |
Status: | Published |
Publisher: | American Physical Society |
Identification Number: | 10.1103/PhysRevB.100.235128 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:155484 |