Spectral functions of strongly interacting isospin-1/2 bosons in one dimension
Mesoscale and Nanoscale Physics
2008-10-24 v2 Other Condensed Matter
Abstract
We study a system of one-dimensional (iso)spin-1/2 bosons in the regime of strong repulsive interactions. We argue that the low-energy spectrum of the system consists of acoustic density waves and the spin excitations described by an effective ferromagnetic spin chain with a small exchange constant J. We use this description to compute the dynamic spin structure factor and the spectral functions of the system.
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@article{arxiv.0808.0681,
title = {Spectral functions of strongly interacting isospin-1/2 bosons in one dimension},
author = {K. A. Matveev and A. Furusaki},
journal= {arXiv preprint arXiv:0808.0681},
year = {2008}
}
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