Recent experiments on dilute quantum gases and their mixtures
reveal a number of general properties in the strongly interacting regime when these systems are in the "upper branch", i.e. when most of the particles are in the scattering state and that the system is in quasi-equilibrium. In this talk, we shall discuss the key features of the upper branch Fermi gas and Bose gas, and the important of statistics in the unitarity regime. We shall also discuss the related issue of itinerant ferromagnetism, and point out the physical settings where ferromagnetism can be found.
Tin-Lun Ho received a B.Sc degree at Chinese University of Hong Kong in 1972, and a Ph.D degree at Cornell University in 1977. He was a postdoc at University of Illinois at Urbana-Champaign and then postdoc at Institute of Theoretical Physics at UC Santa Barbara. He became a faculty member of The Ohio State University in 1983, and and is now a Distinguished Professor of Mathematical and Physical Sciences at the Ohio State University. His earlier research includes superfluid Helium Three, quasicrytstals, and quantum Hall effect. Since the discovery of Bose-Einstein condensation, he has been studying the physics of ultra-cold quantum gases. He is a Sloan Fellow, a Fellow of John Simon Guggenheim Foundation, and a Fellow of American Physical Society. In 2008, he was awarded the Lars Onsager Prize of the American Physical Society for his contributions to quantum gases and his effort for unifying condensed matter physics and atomic physics in this area. He is also know to be Jason Ho to his friends.