Tighter monogamy relations in multi-qubit systems

Zhi-Xiang Jin, Jun Li, Tao Li, and Shao-Ming Fei

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Submission date: 20. Aug. 2018
Pages: 11
published in: Physical review / A, 97 (2018) 3, art-no. 032336 
DOI number (of the published article): 10.1103/PhysRevA.97.032336
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Abstract:
Monogamy relations characterize the distributions of entanglement in multipartite systems. We investigate monogamy relations related to the concurrence C, the entanglement of formation E, negativity N_c and Tsallis-q entanglement T_q. New α-th power of entanglement monogamy relations have been derived, which are tighter than the existing entanglement monogamy relations for some classes of quantum states. Detailed examples are presented.