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Non-unitary dynamics of Sachdev-Ye-Kitaev chain
by Chunxiao Liu, Pengfei Zhang, Xiao Chen
This Submission thread is now published as
Submission summary
| Submission information |
| Preprint Link: |
https://arxiv.org/abs/2008.11955v2
(pdf)
|
| Date accepted: |
2021-02-08 |
| Date submitted: |
2021-01-13 09:23 |
| Submitted by: |
Liu, Chunxiao |
| Submitted to: |
SciPost Physics |
| Ontological classification |
| Academic field: |
Physics |
| Specialties: |
- Condensed Matter Physics - Theory
- Statistical and Soft Matter Physics
|
| Approach: |
Theoretical |
Abstract
We construct a series of one-dimensional non-unitary dynamics consisting of both unitary and imaginary evolutions based on the Sachdev-Ye-Kitaev model. Starting from a short-range entangled state, we analyze the entanglement dynamics using the path integral formalism in the large $N$ limit. Among all the results that we obtain, two of them are particularly interesting: (1) By varying the strength of the imaginary evolution, the interacting model exhibits a first order phase transition from the highly entangled volume law phase to an area law phase; (2) The one-dimensional free fermion model displays an extensive critical regime with emergent two-dimensional conformal symmetry.
