MPS simulations of the Gross-Neveu-Wilson model at finite density reveal topological crystals for weak coupling and soliton lattices for stronger coupling due to Hilbert-space fragmentation, with quasi-spirals off the symmetry line.
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Numerical study of tetramer Heisenberg chain finds transition between tetramer and Haldane phases via deconfined critical state, with spinon/triplon/quinton excitations visible in RIXS for CuInVO5.
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Topological crystals and soliton lattices in a Gross-Neveu model with Hilbert-space fragmentation
MPS simulations of the Gross-Neveu-Wilson model at finite density reveal topological crystals for weak coupling and soliton lattices for stronger coupling due to Hilbert-space fragmentation, with quasi-spirals off the symmetry line.
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Spin order, spin excitations, and RIXS spectra of spin-1/2 tetramer chains
Numerical study of tetramer Heisenberg chain finds transition between tetramer and Haldane phases via deconfined critical state, with spinon/triplon/quinton excitations visible in RIXS for CuInVO5.