Journal article
Spinon decay in the spin-1/2 Heisenberg chain with weak next nearest neighbour exchange
- Abstract:
- Integrable models support elementary excitations with infinite lifetimes. In the spin-1/2 Heisenberg chain these are known as spinons. We consider the stability of spinons when a weak integrability breaking perturbation is added to the Heisenberg chain in a magnetic field. We focus on the case where the perturbation is a next nearest neighbour exchange interaction. We calculate the spinon decay rate in leading order in perturbation theory using methods of integrability and identify the dominant decay channels. The decay rate is found to be small, which indicates that spinons remain well-defined excitations even though integrability is broken.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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Access Document
- Files:
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(Preview, Accepted manuscript, pdf, 1.9MB, Terms of use)
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- Publisher copy:
- 10.1088/1751-8121/aa7d41
Authors
- Publisher:
- IOP Publishing
- Journal:
- Journal of Physics A: Mathematical and Theoretical More from this journal
- Volume:
- 50
- Issue:
- 33
- Article number:
- 334002
- Publication date:
- 2017-07-19
- Acceptance date:
- 2017-07-03
- DOI:
- EISSN:
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1751-8121
- ISSN:
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1751-8113
- Pubs id:
-
pubs:707898
- UUID:
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uuid:f6437b2b-83c7-4690-96e1-d061053a6e4d
- Local pid:
-
pubs:707898
- Source identifiers:
-
707898
- Deposit date:
-
2017-07-13
Terms of use
- Copyright holder:
- © 2017 IOP Publishing Ltd
- Copyright date:
- 2017
- Notes:
- This is the author accepted manuscript following peer review version of the article. The final version is available online from IOP Publishing at: 10.1088/1751-8121/aa7d41
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