Tighter Constraints of Multiqubit Entanglement*
Long-Mei 龙妹 Yang 杨, Bin 斌 Chen 陈, Shao-Ming 少明 Fei 费, Zhi-Xi 志玺 Wang 王 · Communications in Theoretical Physics · 2019
Abstract Monogamy and polygamy relations characterize the distributions of entanglement in multipartite systems. We provide classes of monogamy and polygamy inequalities of multiqubit entanglement in terms of concurrence, entanglement of formation, negativity, Tsallis-q entanglement, and Rényi-α entanglement, respectively. We show that these inequalities are tighter than the existing ones for some classes of quantum states.