title: Entropic Nonsignaling Correlations.
abstract: We introduce the concept of entropic nonsignaling correlations, i.e., entropies arising from probabilistic theories that are compatible with the fact that we cannot transmit information instantaneously. We characterize and show the relevance of these entropic correlations in a variety of different scenarios, ranging from typical Bell experiments to more refined descriptions such as bilocality and information causality. In particular, we apply the framework to derive the first entropic inequality testing genuine tripartite nonlocality in quantum systems of arbitrary dimension and also prove the first known monogamy relation for entropic Bell inequalities. Further, within the context of complex Bell networks, we show that entropic nonlocal correlations can be activated.
authors.affiliation: Institute for Physics & FDM, University of Freiburg, 79104 Freiburg, Germany.|Institute for Theoretical Physics, University of Cologne, 50937 Cologne, Germany.|International Institute of Physics, Universidade Federal do Rio Grande do Norte, 59070-405 Natal-RN, Brazil.
authors.forename: Rafael
authors.initials: R
authors.lastname: Chaves
authors.affiliation: Naturwissenschaftlich-Technische Fakultät, Universität Siegen, Walter-Flex-Straße 3, D-57068 Siegen, Germany.
authors.forename: Costantino
authors.initials: C
authors.lastname: Budroni