Improved monogamy relations with concurrence of assistance and negativity of assistance for multiqubit W-class states

Abstract

Monogamy relations characterize the distributions of entanglement in multipartite systems. We investigate the monogamy relations satisfied by the concurrence of assistance and the negativity of assistance for multiqubit generalized $W$-class states. Analytical monogamy inequalities are presented for both concurrence of assistance and negativity of assistance, which are shown to be tighter than the existing ones. Detailed examples have been presented.

12 pages, 2 figures

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• Dynamics of measurement induced nonlocality under decoherence
• On monogamy and polygamy relations of multipartite systems
• Tighter monogamy and polygamy relations for a superposition of the generalized $W$-class state and vacuum
• Monogamy and polygamy for multi-qudit generalized $W$-class states based on concurrence of assistance and Tsallis-$q$ entanglement of assistance
• Monogamous nature of symmetric multiqubt states with distinct spinors