# Purification and scrambling in a chaotic Hamiltonian dynamics with measurements

@article{Kuno2022PurificationAS, title={Purification and scrambling in a chaotic Hamiltonian dynamics with measurements}, author={Yoshihito Kuno and Takahiro Orito and Ikuo Ichinose}, journal={Physical Review B}, year={2022} }

Chaotic transverse-ﬁeld Ising model with measurements exhibits interesting puriﬁcation dynamics. Ensemble of non-unitary dynamics of a chaotic many-body system with measurements exhibits a puriﬁcation phase transition. We numerically ﬁnd that the law of the increase dynamics of the purity changes by projective measurements in the model. In order to study this behavior in detail, we construct the formalism of the tripartite mutual information (TMI) for non-unitary time evolution operator by…

## 2 Citations

### Universality in the tripartite information after global quenches

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We consider macroscopically large 3-partitions $(A,B,C)$ of connected subsystems $A\cup B \cup C$ in infinite quantum spin chains and study the R\'enyi-$\alpha$ tripartite information…

### Emergence symmetry protected topological phase in spatially tuned measurement-only circuit

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Topological phase transition induced by spatially-tuned single-site measurement is investigated in a measurement-only circuit, in which three diﬀerent types of projective measurement operator.…

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