Morning: Mukund Vengalattore (UC Berkeley now Cornell) talked about spinor BEC --- very rich physics in presence of dipolar interaction (comparable with spinor interaction -- usually competing interactions give rich phases), use phase contrast imaging (similar to those used by Shin et al in Ketterle group to image spin imbalanced fermions), he showed impressive data on evolution of magnetic excitations, real time imaging of Lamor precessing etc -- even phases with both broken translation symmetry 'checker board' pattern and long range coherence -- kind of "supersolid"?
Smitha Vishvanath (UIUC) discussed possible interesting physics arise from superfluid regions coupled via insulator regions;
Han Pu (Rice) talked about interesting physics in dipolar fermions (eg KRb molecules), suggested such phases as deformed fermi surface
[constant deformation as variational parameter--- what about space-dependent deformation would that lower energy further?]
Interesting work on dipolar BEC: Meystre: PRA 75, 053604 (2007) and JL Bohn PRA 74 013623 (2006), Laser Physics 19, 547(2009)
No comments:
Post a Comment