Two component interacting bosons: 1-d exact results

@article{Li2001TwoCI,
  title={Two component interacting bosons: 1-d exact results},
  author={You-Quan Li and Shi-jian Gu and Zu‐Jian Ying and Ulrich Eckern},
  journal={arXiv: Strongly Correlated Electrons},
  year={2001}
}
Motivated by the experiment of two-component Bose-Einstein condensates produced in magnetically trapped $^{87}Rb$, we study one dimensional Boson systems with repulsive $\delta$-function interaction in the presence of SU(2) intrinsic degree of freedom by means of coordinate Bethe ansatz. The ground state and low-lying excitations are solved by both numerical and analytical methods. It is shown that the ground state is an isospin-ferromagnetic state and the excitations are composed of three… 
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References

Quantum Inverse Scattering Method and Correlation Functions
One-dimensional Bose-gas One-dimensional Heisenberg magnet Massive Thirring model Classical r-matrix Fundamentals of inverse scattering method Algebraic Bethe ansatz Quantum field theory integral