Enlarging the notion of additivity of resource quantifiers

  title={Enlarging the notion of additivity of resource quantifiers},
  author={L. F. Melo and Thiago de Melo and Fernando Parisio},
  journal={Physical Review A},
Whenever a physical quantity becomes essential to the realization of useful tasks, it is desirable to define proper measures or monotones to quantify it. In quantum mechanics, coherence, entanglement, and Bell nonlocality are examples of such quantities. Given a quantum state (cid:37) and a quantifier E ( (cid:37) ), both arbitrary, it is a hard task to determine E ( (cid:37) ⊗ N ). However, if the figure of merit E turns out to be additive, we simply have E ( (cid:37) ⊗ N ) = Ne , with e = E… 

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