Many quantum algorithms have daunting resource requirements when compared to what is
available today. To address this discrepancy, a quantum-classical hybrid optimization …

The nature of the zero-temperature phase diagram of the spin-1/2 J 1-J 2 Heisenberg model
on a square lattice has been debated in the past three decades, and it remains one of the …

We present numerical exact results for the ground state and the low-lying excitations for the
spin-1/2 J 1-J 2 Heisenberg antiferromagnet on finite square lattices of up to N= 40 sites …

BaMn 2 As 2 is unique among Ba T 2 As 2 compounds crystallizing in the body-centered-
tetragonal ThCr 2 Si 2 structure, which contain stacked square lattices of 3 d transition metal …

Using the coupled cluster method for high orders of approximation and complementary
exact diagonalization studies we investigate the ground state properties of the spin-1/2 J 1–J …

We present an innovative cluster-based method employing linear combinations of diverse
cluster mean-field states and apply it to describe the ground state of strongly correlated spin …

We use the coupled-cluster method in high orders of approximation to make a
comprehensive study of the ground-state (GS) phase diagram of the spin-1/2 J 1-J 2-J 3 …

Starting with the 3× 3 and the q= 0 states as reference states, we use the coupled cluster
method to high orders of approximation to investigate the ground state of the Heisenberg …

We use the coupled cluster method (CCM) to study the zero-temperature ground-state (GS)
properties of a spin-1 2 J 1− J 2 Heisenberg antiferromagnet on a triangular lattice with …

The spin-1 2 J 1-J 2 Heisenberg model on square lattices is investigated via the finite
projected entangled pair states (PEPS) method. Using the recently developed gradient …