Berlin 2014 – scientific programme

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A: Fachverband Atomphysik

A 52: Characterization and control of complex quantum systems SYQS 1 (with Q, MO, MS, MP, AGjDPG)

A 52.1: Invited Talk

Friday, March 21, 2014, 10:30–11:15, Audimax

Tutorial Complex Systems: From Classical to Quantum, from Single to Many Particle Problems — •Klaus Richter — Institut für Theoretische Physik, Universität Regensburg, 93040 Regensburg, Germany

There does not exist a common notion of what defines a complex (quantum) system; depending on context and community perception of complex behavior varies a lot. I will first review aspects and characteristics of complexity in classical systems, where it has been originally considered, pointing out analogies between complex phenomena in simple low-dimensional settings and emergent complexity from interactions in the many-body case. Thereby I will put forward the notion that complex behaviour is linked to discontinuities. In the second part of the lecture I will discuss implications for complex quantum systems.