DYNAMICS OF TOPOLOGICAL EXCITATIONS IN FERMIONIC ULTRACOLD ATOMS AND IN NUCLEAR SYSTEMS: SIMILARITIES AND DIFFERENCES

Observation of superfluidity in ultracold Fermi gases opened a door to a new era of exploring fascinating physics of topological excitations. Due to  enormous controllability of cold atom traps, recently dynamics of many topological long-lived excitations has been observed with high precision. These excitations include domain walls, solitons, quantum vortices and even quantum turbulent states. From theoretical side, observed dynamics in fermionic clouds has been reproduced with very good accuracy by (superfluid) time-dependent density functional theory (TDDFT) - the approach that becomes important tool to study dynamics in nuclear systems. In this seminar, I will show that the topological excitations can also be present in nuclear systems, including neutron matter as well as medium and heavy nuclei. The predicted impact of such excitations on nuclear dynamics by superfluid TDDFT approach will be discussed.