Speaker: Prof. Dr. Selim Jochim (Physikalisches Institut, Heidelberg)
Title of Talk: “Emergence of Many Body Physics – Shell by Shell”
Date: Tuesday, 21 April 2020, 12:00 – 13:30
Venue: Online Seminar (via Zoom)
Abstract:
When we think of many body physics, we typically assume the thermodynamic limit where the exact number of particles does not matter, and macroscopic behavior is characterized by quantities like pressure or temperature. Quantum physics can have a dramatic effect on such quantities, such as magnetization or the resistance, that might suddenly drop at a phase transition. We will give you an introduction into our quest trying to understand the emergence of such quantum many body effects by increasing the size of a well-controlled few-body system atom by atom. To this end we developed techniques to to determine correlation functions and excitation spectra of isolated, tunable few-body systems. We will present the first results observing the emergence of a quantum phase transition in systems with filled shells.