Valence-bond solids, vestigial order, and emergent SO (5) symmetry in a two-dimensional quantum magnet
J Takahashi, AW Sandvik - Physical Review Research, 2020 - APS
We introduce a quantum spin-1/2 model with many-body correlated Heisenberg-type
interactions on the two-dimensional square lattice, designed so that the system can host a …
interactions on the two-dimensional square lattice, designed so that the system can host a …
Resummation-based quantum Monte Carlo for entanglement entropy computation
Based on the recently developed resummation-based quantum Monte Carlo method for the
SU (N) spin and loop-gas models, we developed an algorithm, dubbed ResumEE, to …
SU (N) spin and loop-gas models, we developed an algorithm, dubbed ResumEE, to …
Phase diagram of a square lattice model of XY spins with direction-dependent interactions
We study a generalization of the well-known classical two-dimensional square lattice
compass model of XY spins (sometimes referred to as the 90∘ compass model), which …
compass model of XY spins (sometimes referred to as the 90∘ compass model), which …