Long-range interactions of lithium atoms

Abstract

The long-range interactions of two atoms, of an atom and a dielectric wall, of an atom and a perfectly conducting wall, and of an atom between two perfectly conducting walls are calculated, including the effects of retardation, for Li using dynamic polarizabilities determined from highly correlated, variationally determined wave functions.

Evaporative cooling of cold atoms at surfaces

“…with ǫ the relative permittivity of the surface, α the static polarizability of the atom, and Φ(ǫ) a dimensionless constant for the surface [71]. The other symbols have their usual meaning.…”

Interactions and dynamics in Li+Li2 ultracold collisions

“…The results were corrected for basis-set superposition error ͑BSSE͒ using the counterpoise correction. 43 The points were then interpolated using the reciprocal power reproducing kernel Hilbert space interpolation method 44,45 with dispersion coefficients C 6 , C 8 , and C 10 fixed to accurate values from the calculations of Yan et al 46 At internuclear distances r Ͼ 16 Å, the ab initio energies were replaced by those from the three-term dispersion formula. Other interpolation parameters, in the notation of Ref.…”

Theoretical study of the absorption spectra of the lithium dimer

“…From photoassociation spectroscopy and cold collision studies performed in the last few years as well as recent theoretical work there have been significant critical tests of and improvements to the molecular potentials [12][13][14], particularly at long-range [15][16][17], and transition dipole moment data [15] available for Li 2 , as well as to the value of the lifetime of the Li 2p state [18,19]. This paper presents calculations of the spectra over the full range of wavelengths where absorption in the X 1 Σ + g -A 1 Σ + u and X 1 Σ + g -B 1 Π u bands is possible.…”