Dipolar dynamics for interacting ultracold fermions in a trapped optical lattice

Huo, Jia-Wei1; Chen, Weiqiang1,2; Schollwoeck, U.3; Troyer, M.4; Zhang, Fu-Chun1

2012-09-11

10.1103/PhysRevA.86.033611

PHYSICAL REVIEW A   影响因子和分区

1050-2947

Using the time-dependent density-matrix renormalization-group method, we calculate transport properties of an interacting Fermi gas in an optical lattice with a confining trap after a sudden displacement of the trap center. In the regime of attractive interactions, the dipolar motion after the displacement can be classified into underdamped oscillations and overdamped relaxations, depending on the interaction strength. These numerical calculations are consistent with experimental results. In the regime of repulsive interactions, we predict a revival of the oscillations of the center of mass when the interaction strength is increased. This unique feature can be considered as a dynamical signature for the emergence of a Mott plateau for an interacting trapped Fermi gas in an optical lattice.

SCI ; EI

英语

其他

Aspen Center for Physics under NSF[1620693]

Optics ; Physics

Optics ; Physics, Atomic, Molecular & Chemical

WOS:000308584800006

AMER PHYSICAL SOC

20123915461795

Crystal lattices ; Electron gas ; Fermions ; Optical materials ; Statistical mechanics

Optical Devices and Systems:741.3 ; Laser Beam Interactions:744.8 ; Mechanics:931.1 ; Atomic and Molecular Physics:931.3 ; Crystal Lattice:933.1.1

PHYSICS

Web of Science

1.Univ Hong Kong, Dept Phys, Hong Kong, Hong Kong, Peoples R China
2.S Univ Sci & Technol China, Dept Phys, Shenzhen 518055, Guangdong, Peoples R China
3.Univ Munich, Dept Phys, Arnold Sommerfeld Ctr Theoret Phys, D-80333 Munich, Germany
4.ETH, Inst Theoret Phys, CH-8093 Zurich, Switzerland

Huo, Jia-Wei,Chen, Weiqiang,Schollwoeck, U.,et al. Dipolar dynamics for interacting ultracold fermions in a trapped optical lattice[J]. PHYSICAL REVIEW A,2012,86(3).

Huo, Jia-Wei,Chen, Weiqiang,Schollwoeck, U.,Troyer, M.,&Zhang, Fu-Chun.(2012).Dipolar dynamics for interacting ultracold fermions in a trapped optical lattice.PHYSICAL REVIEW A,86(3).

Huo, Jia-Wei,et al."Dipolar dynamics for interacting ultracold fermions in a trapped optical lattice".PHYSICAL REVIEW A 86.3(2012).