Abstract
We process comparatively the time evolution of quantum discord, quantum entanglement and Wigner function for GHZ-type coherent states independently interacting with dephasing reservoirs and we address the influence of both Markovian and non-Markovian environments on their evolution. As a matter of fact, we show that in open multipartite systems negativity of Wigner function is sensitive not only to quantum entanglement but also to quantum discord. Indeed, we deem that the Wigner function can be used to capture and quantify general quantum correlations in open multipartite systems.
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