Thermodynamics and spin-charge separation of one-dimensional strongly repulsive three-component fermions
Abstract
The low temperature thermodynamics of one-dimensional strongly repulsive SU(3) fermions in the presence of a magnetic field is investigated via the Yang-Yang thermodynamic Bethe ansatz method. The analytical free energy and magnetic properties of the model at low temperatures in a weak magnetic field are derived via the Wiener-Hopf method. It is shown that the low energy physics can be described by spin-charge separated conformal field theories of an effective Tomonaga-Luttinger liquid and an antiferromagnetic SU(3) Heisenberg spin chain. Beyond the Tomonaga-Luttinger liquid regime, the equation of state is given in terms of the polylog function for a weak external field. The results obtained are essential for further study of quantum criticality in strongly repulsive three-component fermions.
Keywords
Cite
@article{arxiv.1105.1570,
title = {Thermodynamics and spin-charge separation of one-dimensional strongly repulsive three-component fermions},
author = {Peng He and Jen Yee Lee and Xiwen Guan and Murray T. Batchelor and Yupeng Wang},
journal= {arXiv preprint arXiv:1105.1570},
year = {2011}
}
Comments
21 pages, 2 figures