Revisiting a variational study of the quantum $J_1-J_1^{{}^{\prime }}-J_2$ spin-1/2 Heisenberg antiferromagnet

Kevin J. Urcia Vidarte, Luigui A. Chero Nunura, Octavio D. Rodriguez Salmon +1

The variational study of the ground state of the spin$-1/2$ anisotropic Heisenberg antiferromagnet has been revisited on a square lattice by improving and correcting past numerical…