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...
Príomhchruthaitheoirí: | James, A, Essler, F, Konik, R |
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Formáid: | Journal article |
Teanga: | English |
Foilsithe / Cruthaithe: |
2008
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