Prof Jean Dalibard (Collège de France, Kaster Brossel Laboratory): Scale invariance, a hidden symmetry explored with quantum gases
Venue: Small Lecture Theatre
Scale invariance, a concept initially introduced in high-energy physics, has gained numerous applications in the physics of quantum fluids. It can be used to describe strongly interacting Fermi gases, two-dimensional Bose gases, as well as few-body systems that exhibit the "Efimov effect." This presentation will demonstrate how scale and conformal invariance emerge in cold atomic gases. Examples will be provided from a range of fields, including thermodynamics, soliton physics, and specific structures with periodic time evolution, known as "breathers".