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arXiv · 1105.1570

Thermodynamics and spin-charge separation of one-dimensional strongly repulsive three-component fermions

Peng He·Jen Yee Lee·Xiwen Guan·Murray T. Batchelor·Yupeng Wang
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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.

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Peng He, Jen Yee Lee, Xiwen Guan, Murray T. Batchelor, Yupeng Wang. 2011-05-09. Thermodynamics and spin-charge separation of one-dimensional strongly repulsive three-component fermions. https://doi.org/10.1088/1751-8113/44/40/405005

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