5 papers
A missing causal principle: Coordination
Daniel Centeno, Antoine Coquet, Maria Ciudad Alañón +3
We introduce the coordination principle, which states that perfect coordination, in the form of agreement on a uniformly random output, among N parties is possible only if they sha…
Coordination Requires a Common Cause in Quantum Theory
Daniel Centeno, Antoine Coquet, Maria Ciudad Alañón +3
We propose a novel causal principle that is a genuinely multipartite extension of Reichenbach's common cause principle, namely, the coordination principle: parties in a network can…
Certifying Randomness or its Lack Thereof for General Network Scenarios
Maria Ciudad Alañón, Daniel Centeno, Andrew Watford +1
The certification of intrinsic randomness is foundational to quantum information theory and central in many practical applications thereof, such as in the generation of unquestiona…
On whether quantum theory needs complex numbers: the foil theories perspective
Yìlè Yīng, Maria Ciudad Alañón, Daniel Centeno +5
Recent work by Renou et al. (2021) has led to some controversy concerning the question of whether quantum theory requires complex numbers for its formulation. We promote the view t…
Upper Bounding Hilbert Space Dimensions which can Realize all the Quantum Correlations
Yasamin Panahi, Maria Ciudad Alañón, Daniel Centeno +4
We introduce novel upper bounds on the Hilbert space dimensions required to realize quantum correlations in Bell scenarios. We start by considering bipartite cases wherein one of t…