,,Dynamics of a quantum phase transition: Kibble-Zurek scaling hypothesis''

Seria: 
Seminarium Zakładu Fizyki Teoretycznej
Prelegent i afiliacja: 
Prof. dr hab. Jacek DZIARMAGA, Instytut Fizyki UJ
Data: 
2019
Miejsce: 
NCBJ, sala 404, Pasteura 7
Streszczenie: 

A system driven adiabatically across a quantum phase transition becomes excited near the quantum critical point according to a quantum version of the Kibble-Zurek mechanism. Its excited state satisfies a scaling hypothesis with a characteristic length-scale and a time-scale that both depend on  the transition rate and diverge in the adiabatic limit. This hypothesis was verified by an analytic solution of  the quantum Ising chain, numerical simulations of the Bose-Hubbard model, and experiments with ultracold atoms.

Serdecznie zapraszamy,
                                              M. Kowal, W. Piechocki, J. Skalski, L. Szymanowski
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