4 papers
Multicritical deconfined quantum-criticality and Lifshitz point of a helical valence-bond phase
Bowen Zhao, Jun Takahashi, Anders W. Sandvik
The square-lattice - model hosts a deconfined quantum phase transition between antiferromagnetic and dimerized (valence-bond solid) ground states. We here study two d…
Comment on "Gapless spin liquid ground state of the spin- - Heisenberg model on square lattices"
Bowen Zhao, Jun Takahashi, Anders W. Sandvik
Liu et al. [Phys.Rev.B 98, 241109 (2018)] used Monte Carlo sampling of the physical degrees of freedom of a Projected Entangled Pair State (PEPS) type wave function for the …
Quantum phases of SrCu2(BO3)2 from high-pressure thermodynamics
Jing Guo, Guangyu Sun, Bowen Zhao +9
We report heat capacity measurements of SrCu(BO) under high pressure along with simulations of relevant quantum spin models and map out the phase diagram of the…
Symmetry enhanced first-order phase transition in a two-dimensional quantum magnet
Bowen Zhao, Phillip Weinberg, Anders W. Sandvik
Theoretical studies of quantum phase transitions have suggested critical points with higher symmetries than those of the underlying Hamiltonian. Here we demonstrate a surprising em…