Low-temperature asymptotic of the transverse dynamical structure factor for a magnetically polarized XX chain

Abstract

Dyson equation for the real two-time commutator retarded one-magnon Green function of the ferromagnetically polarized XX chain is suggested following the Plakida-Tserkovnikov algorithm. Starting from this result a low-temperature integral representation for the corresponding magnon self energy is obtained by the truncated form factor expansion however without any resummations. Within the suggested approach the low-temperature asymptotics of the transverse dynamical structure factor may be readily studied. Some obtained line shapes are presented.

32 pages, 6 figures

References in corpus (3)

• Equilibrium dynamics of the XX chain
• Low-Temperature Dynamical Structure Factor of the Two-Leg Spin-1/2 Heisenberg Ladder
• Second cluster integral from the spectrum of an infinite XXZ spin chain