| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1856458 | Annals of Physics | 2015 | 10 Pages |
Abstract
First and second terms of the low-temperature cluster expansion for the free energy density of a magnetically polarized XXZ spin chain is obtained within the propagator approach suggested by E.W. Montroll and J.C. Ward. All the calculations employ only one- and two-magnon infinite-chain spectrums. In the XXX-point the result reproduces the well known S. Katsura's formula obtained 50Â years ago by finite-chain calculations.
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Physics and Astronomy (General)
Authors
P.N. Bibikov,