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Título: | Corrigendum: Singularities of the dynamical structure factors of the spin 1/2 XXX chain at finite magnetic field (J. Phys.: Condens. Matter (2015) 27 406001 (DOI: 10.1088/0953-8984/27/40/406001)) |
Autor(es): | Carmelo, José Manuel Pereira Sacramento, P. D. Machado, J. D.P. Campbell, D. K. |
Palavras-chave: | spin chain models dynamic properties band and itinerant models |
Data: | 2020 |
Editora: | IOP Publishing Ltd |
Revista: | Journal of Physics Condensed Matter |
Citação: | Carmelo, J. M. P., Sacramento, P. D., Machado, J. D. P., & Campbell, D. K. (2020). Corrigendum: Singularities of the dynamical structure factors of the spin 1/2 XXX chain at finite magnetic field (2015 J. Phys.: Condens. Matter 27 406001). Journal of Physics: Condensed Matter, 33(6), 069501. doi: 10.1088/1361-648x/abc803 |
Resumo(s): | We wish to report the following corrections to the manuscript [1]. In the second expression given in its equation (72) there is a sign error, since ζ1/2 should read -ζ1/2. The correct expression thus is, 2Δτt (q) = (-ζ1/2 + C φ(τkF→, q))2. This correction implies that for τ = t the exponent ζt(k) given in equation (71) of [1] is negative for k > 0 at any spin density m value, so that in the corresponding range k ∈ [kt, π] considered in that paper one has that kt = 0, including in equation (73) for m→1. Indeed, the sign error also affects the second expression of equation (75) of [1] valid for m→1, which should read, ζt(k) = -1/2 - 2φ(0, k - π)[1 - φ(0, k - π)]. This sign error propagates to the plots of the exponent ζt in figures 2 4 of [1]. The exponent ζt is called ζxx1 in [2], being plotted as a function of k/π for a set of spin density values in figure 6 of that reference. These plots correct those of the exponent ζt in figures 2 4 of [1]; the plots of the spectra and exponent ζt also shown in the latter figures remain correct. A physical consequence of the present sign correction is that there are lower threshold singularity cusps in the corresponding transverse spin dynamical structure factor for the whole momentum range k ∈ [0, π] and not only for k ∈ [kt, π], with kt finite and given in [1]. |
Tipo: | Corrigenda |
URI: | https://hdl.handle.net/1822/73352 |
DOI: | 10.1088/1361-648X/abc803 |
ISSN: | 0953-8984 |
Versão da editora: | https://iopscience.iop.org/article/10.1088/1361-648X/abc803 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | CDF - CEP - Comunicações/Communications (with refereeing) |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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20-CorrJPCM.pdf | 782,42 kB | Adobe PDF | Ver/Abrir |