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journal id: "physicalxreviewxletters"
| Auteurs | A. Klauser, J. Mossel, J.S. Caux, J. van den Brink | | Titel | The Spin-Exchange Dynamical Structure Factor of the S=1/2 Heisenberg Chain |
| Tijdschrift | Physical Review Letters |
| Jaargang | 106 |
| Jaar | 2011 |
| Pagina's | 4 |
| ISSN | 00319007 |
| Faculteit | Faculteit der Natuurwetenschappen, Wiskunde en Informatica |
| Instituut/afd. | FNWI: Institute for Theoretical Physics (ITF) |
| Samenvatting | We determine the spin-exchange dynamical structure factor of the Heisenberg spin chain, as is
measured by indirect Resonant Inelastic X-ray Scattering (RIXS). We find that two-spin RIXS
excitations nearly entirely fractionalize into *two spinon* states. These share the same
continuum lower bound as single-spin neutron scattering excitations, even if the relevant final
states belong to orthogonal symmetry sectors. The RIXS spectral weight is mainly carried by
higher-energy excitations, and is beyond the reach of the low-energy effective theories of
Luttinger liquid type. |
| Soort document | Artikel |
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