In contrast with entanglement, as measured by concurrence, in general, quantum discord does not possess the property of monogamy; that is, there is no tradeoff between the quantum discord shared by a pair of subsystems and the quantum discord that both of them can share with a third party. Here, we show that, as far as monogamy is considered, quantum discord of pure states is equivalent to the ...

We investigate the monogamy relations related to concurrence, entanglement of formation, convex-roof extended negativity, Tsallis-q and Rényi-? entanglement, polygamy entanglement. Monogamy inequalities are obtained for arbitrary multipartite qubit systems, which proved be tighter than existing ones. Detailed examples presented.

One distinct property of quantum entanglement from other classical correlations is that multipartite entanglements cannot be freely shared among the parties: If two parties in a multi-party system share a maximally entangled state, then they cannot share any entanglement with the rest. This is known as monogamy of entanglement (MoE) [1], which is a key ingredient for secure quantum cryptography...

Quantum entanglement and quantum nonlocality are known to exhibit monogamy; that is, they obey strong constraints on how they can be distributed among multipartite systems. Quantum correlations that comprise and go beyond entanglement are quantified by, e.g., quantum discord. It was observed recently that for some states quantum discord is not monogamous. We prove, in general, that any measure ...

Linking specific ecological factors to the evolution of parental care pattern and mating system is a difficult task of key importance. We provide evidence from comparative analyses that an ecological factor (breeding pool size) is associated with the evolution of parental care across all frogs. We further show that the most intensive form of parental care (trophic egg feeding) evolved in concer...

BACKGROUND Strict genetic monogamy leads to sexual harmony because any trait that decreases the fitness of one sex also decreases the fitness of the other. Any deviation from monogamy increases the potential for sexual conflict. Conflict is further enhanced by sperm competition, and given the ubiquity of this phenomenon, sexual conflict is rife. In support of theory, experimentally enforced mon...

This study examined the differences among lesbians, gay men, and heterosexuals at two points in time (1975 and 2000) using responses of 6,864 participants from two archival data sets. Groups were compared on variables representing equality of behaviors between partners in seven realms: traditionally "feminine" housework, traditionally "masculine" housework, finances, support, communication, req...

Monogamy and polygamy relations characterize the quantum correlation distributions among multipartite systems. We investigate monogamy satisfied by measures of general correlation. By using Hamming weight, we derive new inequalities $\beta$-th power $\alpha$-th correlations, respectively. show that these are tighter than existing ones, such as [Int. J. Theor. Phys. 60, 1455-1470 (2021)]. Taking...

We present a method to derive Bell monogamy relations by connecting the complementarity principle with quantum nonlocality. The resulting monogamy relations are stronger than those obtained from the no-signaling principle alone. In many cases, they yield tight quantum bounds on the amount of violation of single and multiple qubit correlation Bell inequalities. In contrast with the two-qubit cas...

In this Letter, we demonstrate that the property of monogamy of Bell violations seen for no-signaling correlations in composite systems can be generalized to the monogamy of contextuality in single systems obeying the Gleason property of no disturbance. We show how one can construct monogamies for contextual inequalities by using the graph-theoretic technique of vertex decomposition of a graph ...