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...
Полное описание
Библиографические подробности
| Главные авторы: |
James, A,
Essler, F,
Konik, R |
|---|
| Формат: | Journal article
|
|---|
| Язык: | English |
|---|
| Опубликовано: |
2008
|
|---|