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Entanglement dynamics with string measurement operators
by Giulia Piccitto, Angelo Russomanno, Davide Rossini
This Submission thread is now published as
Submission summary
| Authors (as registered SciPost users): | Giulia Piccitto · Davide Rossini |
| Submission information | |
|---|---|
| Preprint Link: | scipost_202303_00025v2 (pdf) |
| Date accepted: | 2023-10-26 |
| Date submitted: | 2023-10-20 17:34 |
| Submitted by: | Piccitto, Giulia |
| Submitted to: | SciPost Physics Core |
| Ontological classification | |
|---|---|
| Academic field: | Physics |
| Specialties: |
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| Approaches: | Theoretical, Computational |
Abstract
We explain how to apply a Gaussian-preserving operator to a fermionic Gaussian state. We use this method to study the evolution of the entanglement entropy of an Ising spin chain following a Lindblad dynamics with string measurement operators, focusing on the quantum-jump unraveling of such Lindbladian. We find that the asymptotic entanglement entropy obeys an area law for finite-range string operators and a volume law for ranges of the string which scale with the system size. The same behavior is observed for the measurement-only dynamics, suggesting that measurements can play a leading role in this context.
Author comments upon resubmission
For details see the reply to the Referees.
List of changes
We changed Fig. 4 and the related discussion in the main text
We fixed minor issues
We updated some references with the published version
Published as SciPost Phys. Core 6, 078 (2023)