24 citations · 37 across the 10 of their papers we have counts for
5 papers · 1 filter
First-order Néel-VBS transition in antiferromagnets
Fan Zhang, Wenan Guo, Ribhu K. Kaul
We study the transition between Néel and columnar valence-bond solid ordering in two-dimensional square lattice quantum antiferromagnets with SO(3) symmetry. According to t…
SO(5) multicriticality in two-dimensional quantum magnets
Jun Takahashi, Hui Shao, Bowen Zhao +2
We resolve the nature of the quantum phase transition between antiferromagnetic and valence-bond solid ground states in square-lattice spin-1/2 magnets - the putative deconfined qu…
Field-induced Peierls phase in Heisenberg spins coupled to quantum phonons
Shifeng Cui, Wenan Guo, G. G. Batrouni +1
Spin-Peierls transition occurs in a one-dimensional Heisenberg antiferromagnetic model with single-ion anisotropy, coupled to finite frequency bond phonons, in a magnetic fie…
Diagnosing Symmetry and First-Order Transition in the Model via Entanglement Entropy
Zehui Deng, Lu Liu, Wenan Guo +1
We study the scaling behavior of the Rényi entanglement entropy with smooth boundaries at the phase transition point of the two-dimensional model. Using the recently develo…
Phase diagram of a square lattice model of XY Spins with direction-dependent interactions
Fan Zhang, Wenan Guo, Ribhu K. Kaul
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 interp…