Color Superfluids and Trionic Phases in three component Fermi mixtures
Antonio Privitera
Mathematical Physics
Wednesday, 17 November 2010, 14:00
Matfys library
Abstract:
We study the properties of three-flavors fermions in an optical lattice in
the presence of large threebody repulsion which can be experimentally
induced by strong three-body losses. Static and dynamical properties of
this system are addressed by using dynamical mean-field theory. The
resulting phase diagram shows a strong interplay between magnetization and
superfluidity. In the SU(3) symmetric case and in the absence of
three-body repulsion, the system undergoes a phase transition from color
superfluid to trionic phase, which shows additional CDW modulation at
half-filling. This transition is suppressed when including a large
three-body repulsion. In this case the color superfluid tends to fully
polarize at strong coupling . In the strongly asymmetric case, which is
relevant for current experiments
on Lithium mixtures, the trionic phase is suppressed by losses and, at the
same time, the system is driven to phase separation in the components,
which leads to straightforward experimental signatures.