Theoretical Physics III: Correlated quantum matter
Dynamics of correlated quantum matter
The dynamics of correlated quantum matter represents a key frontier in quantum physics. In our research we contribute to this frontier along two main axes. Firstly, we aim to explore novel universal behaviors, dynamical principles, and phases of matter in such dynamical quantum many-body systems, mostly far beyond equilibrium. In particular, we focus on identifying settings where the system's properties are genuinely quantum with no classical analogue. Secondly, our goal is to target the challenge of theoretically describing such nonequilibrium quantum systems. For that purpose we apply a broad class of methods ranging from purely analytical approaches to machine learning algorithms such as neural quantum states.
Strongly Correlated Light and Matter
Our research field lies at the boundary between quantum optics and condensed-matter physics. We are especially interested in collective phenomena arising in quantum open systems and more generally out of equilibrium, and their possible applications in the control of quantum materials functionalities as well quantum nonlinear optics. Currently, our main focus is on recent experiments implementing a novel, non-relativistic regime of Quantum Electrodynamics (QED) within quantum materials. A reliable description of this many-body problem is very challenging and being currently developed. We adopt tailored field-theoretical approaches, which extend methods from condensed matter and quantum optics theory, merging them into a consistent, comprehensive and flexible framework.
Künstliche Intelligenz trifft Quantenphysik
In Quantentechnologien steckt viel Potenzial. Doch um es ausschöpfen zu können, sind große Herausforderungen zu lösen. Diese geht jetzt ein neues internationales Forschungsprojekt mit Künstlicher Intelligenz (KI) an. Ziel ist es, komplexe Quantensysteme besser zu verstehen. Das Projekt wird von der Deutschen Forschungsgemeinschaft, DFG, gefördert.
Eintauchen in die Welt der kleinsten Teilchen
Quantum hard disks on a lattice
Physiker berechnen Eigenschaften exotischer Materialien
Ein internationales Team von Physikern unter Beteiligung der Universität Augsburg hat eine Theorie entwickelt, mit der man die Eigenschaften sogenannter bosonischer Quanten-Quasikristalle berechnen kann. Die exotischen Materialien sind im Experiment noch nicht beobachtet worden, sollten sich aber herstellen lassen. Die Studie wurde nun in den Physical Review Letters veröffentlicht.
Machine learning solves complex quantum problems
Due to a new method, artificial neural networks, as used in machine learning, will be able to be trained quicker so as to be able to solve complex problems in quantum mechanics. For example, previously unexplained properties of a special state of matter, the quantum spin liquid, can be calculated, something that has not been possible with any previous method to date. This has been made possible by a new optimisation method developed by the Institute of Physics.
Honorary doctorate for Prof. Dieter Vollhardt
Prof. Dieter Vollhardt was awarded an honorary doctorate by the University of Warsaw last week in recognition of his scientific achievements and longstanding collaboration with theoretical physicists at the University of Warsaw.
Contact information:
Address: Universitätsstraße 1 (Physik Süd), 86159 Augsburg
Telefon: +49-(0)-821-598-3701 (Secretary’s office)
Fax: +49-(0)-821-598-3725
E-Mail: angelika.abendroth@physik.uni-augsburg.de
Office: 410 (S)
