arXiv:2008.09113

[refraction-ray]

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• Title: Perturbative instability towards delocalization at phase transitions between MBL phases

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• Ideas (optional): Phase transition point between two MBL phases is unstable towards thermal with interactions.

• back2back paper: https://arxiv.org/pdf/2008.08585.pdf Emergent ergodicity at the transition between many-body localized phases. SPT and time crystal models are also considered with ED. These new models beyond standard spin model is very helpful for further investigations on MBL physics with phase transition in MBL phase.

• Comments: the special interaction form of the model is due to Kramer-Wannier duality. But this requirement is not necessary, as shown in appendix of 2008.08585.