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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Twisted mass fermions in the Hamiltonian two-flavor Schwinger model yield O(a) improvement and milder finite-volume effects once mass renormalization tunes the system to maximal twist.
Higher-order k corrections to Dirac dispersion enable Kohn-Luttinger superconductivity, producing topological p-ip pairing in broken-TR systems and anisotropic or warped pairings on TI surfaces.
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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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Fermion Discretization Effects in the Two-Flavor Lattice Schwinger Model: A Study with Matrix Product States
Twisted mass fermions in the Hamiltonian two-flavor Schwinger model yield O(a) improvement and milder finite-volume effects once mass renormalization tunes the system to maximal twist.
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Pairing around a Single Dirac Point: A Unifying View of Kohn-Luttinger Superconductivity in Chern Bands, Quarter Metals, and Topological Surface States
Higher-order k corrections to Dirac dispersion enable Kohn-Luttinger superconductivity, producing topological p-ip pairing in broken-TR systems and anisotropic or warped pairings on TI surfaces.