Magnetic insulators have proved to be fertile ground for studying new types of quantum
many-body state, and I survey recent experimental and theoretical examples. The insights …

NATURE abounds with phase transitions. The boiling and freezing of water are everyday
examples of phase transitions, as are more exotic processes such as superconductivity and …

We study two-dimensional Heisenberg antiferromagnets with additional multispin
interactions which can drive the system into a valence-bond-solid state. For standard SU (2) …

Monte Carlo simulations of the SU (2)-symmetric deconfined critical point action reveal
strong violations of scale invariance for the deconfinement transition. We find compelling …

We present an extensive quantum Monte Carlo study of the Néel to valence-bond solid
(VBS) phase transition on rectangular-and honeycomb-lattice SU (N) antiferromagnets in …

The S= 1/2 square-lattice JQ model hosts a deconfined quantum phase transition between
antiferromagnetic and dimerized (valence-bond solid) ground states. We here study two …

The two-dimensional JJ′ dimerized quantum Heisenberg model is studied on the square
lattice by means of (stochastic series expansion) quantum Monte Carlo simulations as a …

Inspired by recent conflicting views on the order of the phase transition from an
antiferromagnetic Néel state to a valence bond solid, we use the functional renormalization …

Emergent symmetry is one of the characteristic phenomena in deconfined quantum critical
points (DQCP). As its nonequilibrium generalization, the dual dynamic scaling was recently …

We study the three-dimensional SU (2)-symmetric noncompact CP 1 model, with two
charged matter fields coupled minimally to a noncompact Abelian gauge field. The phase …