  A comprehensive analysis of the exact unitary dynamics of two-component
mass-imbalanced fermions in a one-dimensional double-well potential is
accomplished by considering the total number of particles maximum up to six.
The simultaneous effect of mass imbalance between the flavors and their mutual
interactions on the dynamics is scrutinized through the exact diagonalization.
In particular, we investigate the occupation dynamics of such systems being
initially prepared in experimentally accessible states in which opposite
components occupy opposite wells. Moreover, to capture the role of
interactions, we also inspect situations in which initial states contain an
opposite-spin pair localized in a chosen well. Finally, to assess the amount of
quantum correlations produced during the evolution, we analyze the behavior of
the von Neumann entanglement entropy between components.
