21 citations · 83 across the 8 of their papers we have counts for
8 papers
Fermi polaron in atom-ion hybrid systems
Renato Pessoa, S. A Vitiello, L. A Peña Ardila
Atom-ion hybrid systems are promising platforms for the quantum simulation of polaron physics in certain quantum materials. Here, we investigate the ionic Fermi polaron, a charged…
Finite-range effects in the unitary Fermi polaron
Renato Pessoa, S. A. Vitiello, L. A. Peña Ardila
Quantum Monte Carlo techniques are employed to study the properties of polarons in an ultracold Fermi gas, at and in the unitary regime using both a zero-range model and a…
Contact interaction in an unitary ultracold Fermi gas
Renato Pessoa, S. Gandolfi, S. A. Vitiello +1
An ultracold Fermi atomic gas at unitarity presents universal properties that in the diluted limit can be well described by a contact interaction. By employing a guide function wit…
Monte Carlo calculations for Fermi gases in the unitary limit with a zero-range interaction
Renato Pessoa, S. A. Vitiello, K. E. Schmidt
An ultracold Fermi gas with a zero-range attractive potential in the unitary limit is investigated using variational and diffusion Monte Carlo methods. Previous calculations have u…
Elastic constants and supersolidity in solid hcp 4He
Renato Pessoa, M. de Koning, S. A. Vitiello
The elastic constants of solid \textit{hcp} He are investigated in molar volumes ranging from about melting up to approximately 14 MPa. Properties of interest are determined by…
Dislocation Mobility in a Quantum Crystal: the Case of Solid 4He
Renato Pessoa, S. A. Vitiello, Maurice de Koning
We investigate the structure and mobility of dislocations in hcp 4He crystals. In addition to fully characterizing the five elastic constants of this system, we obtain direct insig…