Finite-temperature dynamical structure factor of alternating Heisenberg chains
We develop a low-temperature expansion for the finite-temperature dynamical structure factor of the spin half Heisenberg chain with alternating nearest-neighbor exchange in the limit of strong alternation of the exchange constants. We determine both the broadening of the low-lying triplet lines and...
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Detalhes bibliográficos
| Principais autores: |
James, A,
Essler, F,
Konik, R |
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| Formato: | Journal article
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| Idioma: | English |
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| Publicado em: |
2008
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