Few-fermion resonant tunneling and underbarrier trapping in asymmetric potentials

In many-body quantum systems, tunneling is strongly affected by correlations, which makes the study of few-body systems essential for simplifying and gaining insight into complex behaviors. On the example of the Fermi-Hubbard model with the presence of asymmetric potential, we demonstrate the richness of the tunneling dynamics in few-body lattice systems. We show that the interaction between fermions plays a crucial role in the system evolution and the tunneling symmetry. In specific regimes, we demonstrate that the strongly interacting system undergoes nontrivial effects of highly-asymmetric resonant tunneling and underbarrier trapping.