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Kontrast Disl
Seminar: Dynamics and transport in the vicinity of a quantum phase transition dr. sc. Félix Rose
Institute for Theoretical Physics, Heidelberg University
23.02.2023. u 14:00h
Institute of Physics, 3rd wing, big lecture hall and zoom
A quantum phase transition (QPT) is defined as the qualitative change in the ground state of a system as a nonthermal external parameter (e.g. doping, pressure or magnetic field) is tuned.
While a QPT can only occur at zero-temperature, it has a strong effect on the phase diagram in its vicinity and can give rise to strong correlations.
I introduce the relativistic quantum O(N) model which describes quantum phase transitions such as the Mott insulator-superfluid transition in boson gases trapped in optical lattices or the paramagnetic-antiferromagnetic transition in magnets. I present results about the universal properties of the model in the vicinity of the transition, both thermodynamical and dynamical.
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Meeting ID: 886 3760 9930
Passcode: 427413
Seminar hostsNeven Šantić and Damir Dominko
IF Ⓒ 2017