Seminario del Dr. Giacomo Roati (INO-CNR, LENS)
giovedi 18 giugno ore 15 in Aula Magna del Dipartimento di Fisica e Astronomia
Titolo:Strongly‐correlated fermions in Florence
Abstract:
Strongly-correlated fermions show remarkable physical properties due to the combination of interactions, statistics and dimensionality. The interest in studying these systems in not only directed to fundamental science but also towards technological applications.
I will present the present status and the future perspectives of the experimental work carried out in my laboratory at LENS, cooling to quantum degeneracy binary mixtures of 6Li atoms. This atomic system is particularly interesting due to the exceptional tunability of the interactions between fermions, allowing the study of the crossover from the regime of Bose- Einstein condensate (BEC) of tightly bound molecules to the Bardeen‐Cooper‐Schrieffer (BCS) state of long‐range Cooper pairs.
In the intermediated “unitary” regime, where the condensed pair size is comparable with the mean inter‐particle distance, and where the interactions are the maximum allowed by quantum mechanics, the physics is dominated by the correlations between the particles, sharing similarities with exotic systems such as high‐Tc superconductors.