van der Waals coefficients for systems with ultracold polar alkali-metal molecules
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In this paper, a systematic study of the leading isotropic van der Waals coefficients for the alkali-metal atom+molecule and molecule+molescule systems is presented.Abstract:
A systematic study of the leading isotropic van der Waals coefficients for the alkali-metal atom+molecule and molecule+molecule systems is presented. Dipole moments and static and dynamic dipole polarizabilities are calculated employing high-level quantum chemistry calculations. The dispersion, induction, and rotational parts of the isotropic van der Waals coefficient are evaluated. The known van der Waals coefficients are then used to derive characteristics essential for simple models of the collisions involving the corresponding ultracold polar molecules.read more
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Journal ArticleDOI
Collisions of ultracold 23Na87Rb molecules with controlled chemical reactivities
TL;DR: The creation of optically trapped samples of ground-state bosonic sodium-rubidium molecules with precisely controlled internal states and a detailed study on the inelastic loss with and without the NaRb +NaRb → Na2 + Rb2 chemical reaction are reported.
Journal ArticleDOI
Sticky collisions of ultracold RbCs molecules.
Philip D. Gregory,Matthew D. Frye,Jacob A. Blackmore,Elizabeth M. Bridge,Rahul Sawant,Jeremy M. Hutson,Simon L. Cornish +6 more
TL;DR: In this paper, the dominant mechanism for collisional loss is not well understood when there are no allowed 2-body loss processes, and the authors compare their findings with the sticky collision hypothesis that pairs of molecules form long-lived collision complexes.
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Collisions of ultracold ^{23}Na^{87}Rb molecules with controlled chemical reactivities
TL;DR: In this paper, the authors report the creation of optically trapped samples of ground-state bosonic sodium-rubidium molecules with precisely controlled internal states and, enabled by this, a detailed study on the inelastic loss with and without the NaRb+NaRb + NaRsb + Rb$_2$ + NRb$-2$ chemical reaction, they observed very similar loss and heating, regardless of the chemical reactivities.
Journal ArticleDOI
Loss of Ultracold ^{87}Rb^{133}Cs Molecules via Optical Excitation of Long-Lived Two-Body Collision Complexes.
TL;DR: In this article, the lifetime of ground state ground-state bialkali molecules in an optical trap is limited by fast optical excitation of long-lived two-body collision complexes.
Journal ArticleDOI
Controlling the Scattering Length of Ultracold Dipolar Molecules.
TL;DR: It is found that molecules with B[over ˜]>10^{8} are immune to any quenching losses when a sufficient ac field is applied, the ratio elastic to quench processes can reach values above 10^{3}, and that the value and sign of the scattering length can be tuned.
References
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Book
The Theory of Intermolecular Forces
TL;DR: In this paper, Cartesian tensors and spherical tensors are used to model the intermolecular potentials in the presence of many-body effects and intermolescular forces.