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MP: Fachverband Theoretische und Mathematische Grundlagen der Physik

MP 17: Quantum Information I

MP 17.1: Talk

Thursday, March 31, 2011, 09:50–10:10, 30.45: 201

Quantum fluctuators and the tensor algebra method — •Zoltan Zimboras, Michael Keyl, Zoltan Kadar, and Dirk-Michael Schlingemann — Quantum Information Group, ISI, Torino, Italy

Quantum fluctuators appear in physics in many different contexts, e.g., quantum phase transitions, finite size corrections to mean-field theories, non-commutative central limit theorems. Recently they have also been applied in quantum information theory in the description of quantum memories. In the above fields the way how the thermodynamic limit is taken differs from one another, which results in different definitions for the limiting fluctuators. In this talk we would like to show how the tensor algebra method (borrowed from constructive field theory) provides a natural unified description of all these limits. Furthermore, it is a flexible formalism for attacking existing problems from a different point of view, as will be demonstrated by examples of quantum information theory. (arXiv:1006.3461)