Coherent oscillations in small Fermi-polaron systems
PublisherAMER PHYSICAL SOC
Rights accessOpen Access
We study the ground state and excitations of a one-dimensional trapped polarized Fermi gas interacting with a single impurity. First, we study the tunneling dynamics of the impurity through a potential barrier, such as one effectively created by a double-well trap. To this end, we perform an exact diagonalization of the full few-body Hamiltonian and analyze the results in a local-density approximation. Off-diagonal and one-particle correlation matrices are studied and are shown to be useful for discerning between different symmetries of the states. Second, we consider a radio-frequency spectroscopy of our system and the resulting spectral function. These calculations can motivate future experiments, which can provide further insight into the physics of a Fermi polaron.
CitationTylutki, M., Astrakharchik, G., Recati, A. Coherent oscillations in small Fermi-polaron systems. "Physical Review A", 1 Desembre 2017, vol. 96, núm. 6, p. 1-9.