On the Q operator and the spectrum of the XXZ model at root of unity
The spin-1/2 Heisenberg XXZ chain is a paradigmatic quantum integrable model. Although it can be solved exactly via Bethe ansatz techniques, there are still open issues regarding the spectrum at root of unity values of the anisotropy. We construct Baxter's Q operator at arbitrary anisotropy...
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| Format: | Article |
| Language: | English |
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SciPost
2021-09-01
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| Series: | SciPost Physics |
| Online Access: | https://scipost.org/SciPostPhys.11.3.067 |