2 papers
cond-mat.str-el2026
Lee-Yang Zeros and Pseudocritical Drift in J-Q Néel-VBS Transitions
Chunhao Guo, Zhe Wang, Danhe Wang +3
Square-lattice J-Q models provide a sign-problem-free setting for probing the quantum phase transition between Néel antiferromagnet and columnar valence-bond solid. We analyze thi…
cond-mat.str-el2024
Nearly degenerate ground states of a checkerboard antiferromagnet and their bosonic interpretation
Haiyuan Zou, Fan Yang, Wei Ku
The spin- model system with antiferromagnetic (AF) couplings on a - checkerboard lattice, known as the planar pyrochlore model, is strongly frustrated and associated…