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NMR relaxation in Ising spin chains

Abstract:

We examine the low frequency spin susceptibility of the paramagnetic phase of the quantum Ising chain in a transverse field at temperatures well below the energy gap. We find that the imaginary part is dominated by rare quantum processes in which the number of quasiparticles changes by an odd number. We obtain exact results for the NMR relaxation rate in the low temperature limit for the integrable model with nearest-neighbor Ising interactions, and derive exact universal scaling results appl...

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Publication status:
Published
Peer review status:
Peer reviewed
Version:
Accepted Manuscript

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Publisher copy:
10.1103/PhysRevB.99.035156

Authors


Steinberg, J More by this author
Armitage, NP More by this author
More by this author
Institution:
University of Oxford
Division:
MPLS Division
Department:
Physics
Subgroup:
Theoretical Physics
ORCID:
0000-0002-1127-5830
Sachdev, S More by this author
Publisher:
American Physical Society Publisher's website
Journal:
Physical Review B: Condensed Matter and Materials Physics Journal website
Volume:
99
Pages:
035156
Publication date:
2019-01-29
Acceptance date:
2019-01-09
DOI:
EISSN:
1550-235X
ISSN:
1098-0121
Pubs id:
pubs:966715
URN:
uri:ac617fc3-4916-407f-a418-3f0d6e5ce76f
UUID:
uuid:ac617fc3-4916-407f-a418-3f0d6e5ce76f
Local pid:
pubs:966715

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