Double semion phase in an exactly solvable quantum dimer model on the kagome lattice
Double semion phase in an exactly solvable quantum dimer model on the kagome lattice
Quantum dimer models typically arise in various low energy theories like those of frustrated antiferromagnets. We introduce a quantum dimer model on the kagome lattice which stabilizes an alternative ${\mathbb{Z}}_{2}$ topological order, namely the so-called ``double semion'' order. For a particular set of parameters, the model is exactly solvable, allowing …