Liyuan Qiu, Institute for Interdisciplinary Information Sciences, Tsinghua University
In this talk, I will introduce three non-equilibrium dynamics experiments in the anti-ferromagnetic spin-1 sodium condensate, including one experiment about the Kibble-Zurek mechanism in the first-order quantum phase transition and two experiments about Dynamical Quantum Phase Transitions.
In the Kibble-Zurek mechanism, we find out that not only the ground state matters in quantum phase transition but also the high excited states matter.