Bound dimers in bilayers of cold polar molecules

TY - JOUR

T1 - Bound dimers in bilayers of cold polar molecules

AU - Volosniev, A.G.

AU - Zinner, N.T.

AU - Fedorov, D.V.

AU - Jensen, A.S.

AU - Wunsch, B.

PY - 2011/6/29

Y1 - 2011/6/29

N2 - The exploration of cold polar molecules in different geometries is a rapidly developing experimental and theoretical pursuit. Recently, the implementation of optical lattices has enabled confinement in stacks of planes, the number of which is also controllable. Here, we consider the bound state structure of two polar molecules confined in two adjacent planes as a function of the polarization angle of the dipole moment of the molecules. We prove analytically and present numerical evidence for the existence of bound states for arbitrary dipole moments and polarization directions in this two-dimensional geometry. The spatial structure of the bound states is dominated by two-dimensional s- and p-waves, where the latter exceeds 40% over a large range of polarization angles for intermediate or strong dipole strength. Finally, we consider the influence of the dimer bound states on the potential many-body ground state of the system.

AB - The exploration of cold polar molecules in different geometries is a rapidly developing experimental and theoretical pursuit. Recently, the implementation of optical lattices has enabled confinement in stacks of planes, the number of which is also controllable. Here, we consider the bound state structure of two polar molecules confined in two adjacent planes as a function of the polarization angle of the dipole moment of the molecules. We prove analytically and present numerical evidence for the existence of bound states for arbitrary dipole moments and polarization directions in this two-dimensional geometry. The spatial structure of the bound states is dominated by two-dimensional s- and p-waves, where the latter exceeds 40% over a large range of polarization angles for intermediate or strong dipole strength. Finally, we consider the influence of the dimer bound states on the potential many-body ground state of the system.

U2 - 10.1088/0953-4075/44/12/125301

DO - 10.1088/0953-4075/44/12/125301

M3 - Journal article

SN - 0953-4075

VL - 44

SP - 125301

JO - Journal of Physics B: Atomic, Molecular and Optical Physics

JF - Journal of Physics B: Atomic, Molecular and Optical Physics

IS - 12

ER -