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There is a growing consensus that many-body-generalized Anderson insulators can arise in low-dimensional strongly disordered systems if the added interparticle interactions are weak. Then, curiously, can robust localization also persist in the infinite-interaction limit, i.e., when the interaction strength is infinitely larger than the randomness strength? If so, is it still many-body Anderson localization? In this talk, we show affirmatively that robust localization can indeed be stabilized even when the interaction strengths are effectively infinite, but, crucially, the resulting new localized phase is no longer a many-body Anderson insulator. Our work aims at promoting a paradigm shift in many-body localization from the weak-interaction domain to the infinite-interaction territory.
Chun Chen obtained his bachelor and master degrees in physics both from Fudan University in 2008 and 2011. He gained his PhD in theoretical physics from the University of Minnesota Twin Cities in 2017. Then, he moved to the University of Alberta for his postdoctoral research from 2017 to 2019. He is currently a postdoctoral fellow in the condensed matter department at the Max Planck Institute for the Physics of Complex Systems in Dresden.
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