Analytical predictions and MPS simulations show that magnetic fields or single-ion anisotropy can probe spinon interactions in the critical phase of the spin-1 bilinear-biquadratic chain.
At the critical point,θU LS =π/4,g 2 vanishes and the system is SU(3)-symmetric
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Probing spinon interactions in the spin-1 bilinear-biquadratic chain
Analytical predictions and MPS simulations show that magnetic fields or single-ion anisotropy can probe spinon interactions in the critical phase of the spin-1 bilinear-biquadratic chain.