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Quantum-physical Model System

Two researchers at Heidelberg University have developed a model system that enables a better understanding of the processes in a quantum-physical experiment with ultracold atoms. Using computer-assisted methods, Prof. Dr Sandro Wimberger and David Fischer from the Institute for Theoretical Physics discovered physical laws that point to the universal properties of this system. Their results were published in the journal “Annalen der Physik”. Under certain conditions, small particles follow completely different physical laws than those we are accustomed to. “Observing such quantum-physical phenomena, however, is sometimes difficult and requires working with small and isolated systems and to investigate those. But perfect isolation from the environment is never possible, so external influences can easily destroy the fragile state of the quantum system,” explains primary author David Fischer, a student of physics at Heidelberg University. For experiments in this field, keeping such disruptions under control is of great interest. “This control enables us not only to ensure the coherence of the system, but it can also be used selectively to effect special conditions,” emphasises Prof. Wimberger.”

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