Experimental realization of fragmented models in tilted Fermi-Hubbard chains

Voices Powered byElevenlabs logo


What are the questions raised by this paper?

AI: The text does not mention any questions raised by the paper. It mainly discusses the topic of quantum many-body systems and their non-ergodicity caused by fragmentation of the Hilbert-space, and the use of the tilted one-dimensional Fermi-Hubbard model to study this phenomenon using ultracold fermions. The paper presents experimental results on the doublon-number dependence of these emergent microscopic processes.


Thomas Kohlert, Sebastian Scherg, Pablo Sala, Frank Pollmann, Bharath Hebbe Madhusudhana, Immanuel Bloch, Monika Aidelsburger


Quantum many-body systems may defy thermalization even without disorder. Intriguingly, non-ergodicity may be caused by a fragmentation of the many-body Hilbert-space into dynamically disconnected subspaces. The tilted one-dimensional Fermi-Hubbard model was proposed as a platform to realize fragmented models perturbatively in the limit of large tilt. Here, we demonstrate the validity of this effective description for the transient dynamics using ultracold fermions. The effective analytic model allows for a detailed understanding of the emergent microscopic processes, which in our case exhibit a pronounced doublon-number dependence. We study this experimentally by tuning the doublon fraction in the initial state.

Follow Us on

1 comment


What is the difference between this paper and by the same group?

Add comment
Recommended SciCasts
Cosmic Birefringence in 2022
Semi-supervised Sequence Learning