Weak integrability breaking and level spacing distribution
Recently it was suggested that certain perturbations of integrable spin chains lead to a weak breaking of integrability in the sense that integrability is preserved at the first order in the coupling. Here we examine this claim using level spacing distribution. We find that the volume dependent c...
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| Format: | Article |
| Language: | English |
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SciPost
2021-08-01
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| Series: | SciPost Physics |
| Online Access: | https://scipost.org/SciPostPhys.11.2.037 |