Spinon confinement in a spin-1 chain.
作者： Natalia Chepiga , Frédéric Mila , Frank Verstraete , Laurens Vanderstraeten , Elisabeth Wybo
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摘要: We explain how spinons and magnons naturally arise in $\mathrm{SU}(2)$ invariant spin chains when describing ground states elementary excitations using MPS. Within this description, can emerge a spin-1 chain at first-order transition between symmetry-protected topological phase trivial phase. provide MPS simulations for the spinon dispersion relations frustrated dimerized chain, show that these determine low-lying spectrum vicinity of by formation spinon/anti-spinon bound states.
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