Luttinger liquid tensor network: sine versus tangent dispersion of massless Dirac fermions

V. A. Zakharov, S. Polla, A. Donís Vela +4

To apply the powerful many-body techniques of tensor networks to massless Dirac fermions one wants to discretize the $p\cdot \ddot{I}ƒ$ Hamiltonian and construct a matrix-product-operator…