What does information causality imply?

          @misc{ scivideos_PIRSA:10110053,
            doi = {10.48660/10110053},
            url = {https://pirsa.org/10110053},
            author = {Pawlowski, Marcin},
            keywords = {Quantum Foundations},
            language = {en},
            title = {What does information causality imply?},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2010},
            month = {nov},
            note = {PIRSA:10110053 see, \url{https://scivideos.org/pirsa/10110053}}
          }
          

Abstract

Nonlocality is the most striking feature of quantum mechanics. It might even be considered its defining feature and understanding it may be the most important step towards understanding the whole theory. Yet for a long time it was impossible to pinpoint the reason behind the exact amount of nonlocality allowed by quantum mechanics expressed by Tsirelson bound. Recently information causality has been shown to be the principle from which this bound can be derived. However the whole set of nonlocal correlations and nonlocal information processing protocols that quantum mechanics allows is not specified by the Tsirelson bound. It remains an open question whether this whole zoo of nonlocality can be derived from information causality. In this talk I present the fields where information causality is applied together with most recent results or lack of such.