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Hannover 2013 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 13: Quantum information: Concepts and methods I

Q 13.1: Talk

Monday, March 18, 2013, 14:00–14:15, E 214

Effective theories from missing information — •Cedric Beny and Tobias Osborne — Leibniz Universität Hannover

Our ability to probe the real worlds is always limited by experimental constraints such as the precision of our instruments, or our inability to fully control a system's environment. It is remarkable that the resulting imperfect data nevertheless contains strong regularities which can be understood in terms of effective laws.

I will present recent results towards the development of systematic methods to define such effective theories using tools from quantum information theory. In particular, I will examine decoherence and renormalization as phenomena giving rise to a classical effective field theory from a quantum theory.

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