NMR relaxation in Ising spin chains
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...
| Main Authors: | , , , |
|---|---|
| Format: | Journal article |
| Published: |
American Physical Society
2019
|