Multiparty Entanglement in Quantum Matter

Liuke Lyu examines the multipartite entanglement contained in the reduced density matrix of a local region. Bipartite and multipartite witnesses form a toolkit for mapping its distribution in Ising systems, spin liquids and measurement-driven transitions. The talk then goes beyond genuine multipartite entanglement to genuine network multiparty entanglement, a more collective quantity that can distinguish and characterise quantum phases more sharply.