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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 domina...

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Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1088/1751-8121/aa7d41

Authors


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Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Theoretical Physics
Role:
Author
More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Theoretical Physics
Role:
Author
More from this funder
Funding agency for:
Groha, S
Grant:
G0601617
Publisher:
IOP Publishing Publisher's website
Journal:
Journal of Physics A: Mathematical and Theoretical Journal website
Volume:
50
Issue:
33
Article number:
334002
Publication date:
2017-07-19
Acceptance date:
2017-07-03
DOI:
EISSN:
1751-8121
ISSN:
1751-8113
Source identifiers:
707898
Pubs id:
pubs:707898
UUID:
uuid:f6437b2b-83c7-4690-96e1-d061053a6e4d
Local pid:
pubs:707898
Deposit date:
2017-07-13

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