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Bloch oscillations and the lack of the decay of the false vacuum in a one-dimensional quantum spin chain
by O. Pomponio, M. A. Werner, G. Zarand, G. Takacs
This Submission thread is now published as
Submission summary
| Authors (as registered SciPost users): | Gabor Takacs |
| Submission information | |
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| Preprint Link: | https://arxiv.org/abs/2105.00014v4 (pdf) |
| Date accepted: | 2022-02-04 |
| Date submitted: | 2022-01-24 09:22 |
| Submitted by: | Takacs, Gabor |
| Submitted to: | SciPost Physics |
| Ontological classification | |
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| Academic field: | Physics |
| Specialties: |
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| Approaches: | Theoretical, Computational |
Abstract
We consider the decay of the false vacuum, realised within a quantum quench into an anti-confining regime of the Ising spin chain with a magnetic field opposite to the initial magnetisation. Although the effective linear potential between the domain walls is repulsive, the time evolution of correlations still shows a suppression of the light cone and a reduction of vacuum decay. The suppressed decay is a lattice effect, and can be assigned to emergent Bloch oscillations.
Author comments upon resubmission
We added text to the introduction, and also a detailed discussion to the conclusion, regarding the results of Refs. [34] and [38].
Published as SciPost Phys. 12, 061 (2022)