38 citations · 132 across the 23 of their papers we have counts for
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Scattering matrix of elementary excitations in the antiperiodic XXZ spin chain with η=iπ/3
Pei Sun, Jintao Yang, Yi Qiao +2
We study the thermodynamic limit of the antiperiodic XXZ spin chain with the anisotropic parameter . We parameterize eigenvalues of the transfer matrix by their zer…
Exact ground state and elementary excitations of a competing spin chain with twisted boundary condition
Wei Wang, Yi Qiao, Junpeng Cao +2
A novel Bethe ansatz scheme is proposed to investigate the exact physical properties of an integrable anisotropic quantum spin chain with competing interactions among the nearest,…
Root patterns and energy spectra of quantum integrable systems without symmetry: antiperiodic spin chain
Xiong Le, Yi Qiao, Junpeng Cao +3
Finding out root patterns of quantum integrable models is an important step to study their physical properties in the thermodynamic limit. Especially for models without symm…
T-W relation and free energy of the Heisenberg chain at a finite temperature
Pengcheng Lu, Yi Qiao, Junpeng Cao +3
A new nonlinear integral equation (NLIE) describing the thermodynamics of the Heisenberg spin chain is derived based on the t-W relation of the quantum transfer matrices. The free…
Exact surface energy and helical spinons in the XXZ spin chain with arbitrary non-diagonal boundary fields
Yi Qiao, Junpeng Cao, Wen-Li Yang +2
An analytic method is proposed to compute the surface energy and elementary excitations of the XXZ spin chain with generic non-diagonal boundary fields. For the gapped case, in som…