Journal article
Out-of-equilibrium dynamics of the XY spin chain from form factor expansion
- Abstract:
- We consider the XY spin chain with arbitrary time-dependent magnetic field and anisotropy. We argue that a certain subclass of Gaussian states, called Coherent Ensemble (CE) following [1], provides a natural and unified framework for out-of-equilibrium physics in this model. We show that all correlation functions in the CE can be computed using form factor expansion and expressed in terms of Fredholm determinants. In particular, we present exact out-of-equilibrium expressions in the thermodynamic limit for the previously unknown order parameter 1-point function, dynamical 2-point function and equal-time 3-point function.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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(Preview, Version of record, 4.0MB, Terms of use)
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- Publisher copy:
- 10.21468/SciPostPhys.12.1.019
Authors
- Publisher:
- SciPost Foundation
- Journal:
- SciPost Physics More from this journal
- Volume:
- 12
- Issue:
- 1
- Article number:
- 019
- Publication date:
- 2022-01-13
- Acceptance date:
- 2021-11-12
- DOI:
- EISSN:
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2542-4653
- Language:
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English
- Keywords:
- Pubs id:
-
1195306
- Local pid:
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pubs:1195306
- Deposit date:
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2021-11-12
Terms of use
- Copyright holder:
- Granet et al.
- Copyright date:
- 2022
- Rights statement:
- Copyright E. Granet et al. This work is licensed under the Creative Commons Attribution 4.0 International License. Published by the SciPost Foundation.
- Licence:
- CC Attribution (CC BY)
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