Dear all, this may be of interest to some of you (though unfortunately I cannot attend myself): -------- Forwarded Message -------- Subject: [Mpqth-announce] Talk by Jordi Tura this Thursday at 16:00 Date: Tue, 16 Jun 2015 14:08:49 +0200 From: Gemma De las Cuevas <Gemma.DelasCuevas@mpq.mpg.de> To: mpqth-announce@mpq.mpg.de Dear all, Our guest Jordi Tura (from ICFO, close to Barcelona) will give a talk this Thursday 18.6. at 16:00 in our seminar room about Bell's nonlocality in many-body 1-D systems. Abstract: It has been recently shown that Bell's nonlocality can be revealed in many-body systems which are permutationally invariant by only measuring two-body correlations. Also, for translationally invariant systems with a small (n<6) number of particles, this has been shown to be the case. In this talk, I will discuss how one can study 1-D systems with a large number of parties efficiently. I will start by introducing the technique of dynamic programming, that allows to efficiently calculate the classical limit of any Bell inequality for 1-D systems. Then I will focus on giving a lower bound on the quantum limit of such an inequality, by doing appropriate measurements, such that the resulting Bell operator can be mapped to a system of free fermions. Finally, I will focus on the translationally invariant case, where analytically closed expressions can be given. This will replace our quantum coffee. Everybody is welcome! Best, Gemma _______________________________________________ Mpqth-announce mailing list Mpqth-announce@mpq.mpg.de http://post.rzg.mpg.de/mailman/listinfo/mpqth-announce