BIRS Workshop Lecture Videos

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BIRS Workshop Lecture Videos

An Algebraic Framework for XOR Games Bene Watts, Adam


One promising technique for understanding features of nonlocal games is to study constraints placed on the players' measurement operators using techniques from algebraic combinatorics. In this talk, I will show an XOR game has commuting operator value 1 iff an instance of the subgroup membership problem on a finitely presented group corresponding to the game has a solution. This relationship can be used to show that the value one question is decidable for interesting sub-cases of XOR games. It also gives an algebraic framing of some open questions concerning XOR games. Based on joint work with Aram Harrow, Anand Natarajan, and Gurtej Kanwar.

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