Pairs of trapped atoms can be associated to make a diatomic molecule using a time dependent magnetic field to ramp the energy of a scattering resonance state from above to below the scattering threshold. A relatively simple model, parameterized in terms of the background scattering length and resonance width and magnetic moment, can be used to predict conversion probabilities from atoms to mole...

The vibrational motion of a molecule is quantized and the resulting energy level spacings give rise to transitions in the mid-IR portion of the electromagnetic spectrum (4000 to ca. 400 cm). As you know from study of the diatomic harmonic oscillator, the energies (or wavenumber positions, cm) of these transitions are related to the bond strength (force constant), bond length, and atomic masses ...

The theory of generalized charges is an asymptotic approximation quantum mechanics for interatomic forces. It based on the model multicomponent electron gas, which extends Thomas–Fermi inhomogeneous gas to pair electronic states. present research takes in consideration participation field bonds. Herein, definition (GC) by means overlap integral wave functions valence electrons given, and proper...

We explore the feasibility of optically forming long-range tetratomic and larger polyatomic molecules in their ground electronic state from ultracold pairs polar aligned by external fields. Depending on relative orientation interacting diatomic molecules, we find that a can be formed either as weakly bound complex very extended halo or pure molecule composed collinear nearly-collinear molecules...

Three-body recombination is a chemical reaction where the collision of three atoms leads to formation diatomic molecule. In ultracold regime it expected that production rate molecule generally decreases with its binding energy ${E}_{b}$, however, precise dependence and physics governing have been left unclear so far. Here we present comprehensive experimental theoretical study dependency for th...

The recently proposed partition theory (PT) (J. Phys. Chem. A2007, 111, 2229.) is illustrated on a simple one-dimensional model of a heteronuclear diatomic molecule, 1DAB. It is shown that a sharp definition for the charge of molecular fragments emerges from PT and that the ensuing population analysis can be used to study how charge redistributes during dissociation and the implications of that...

We present a simple exact analytical solution, using the Weyl-Titchmarsh-Kodaira spectral theorem, for the spectral function of the one-dimensional diatomic molecule model consisting of two attractive delta function wells in the presence of a static external electric field. For sufficiently deep and far apart wells, this molecule supports both an even and an odd state, and the introduction of a...

We present a simple exact analytical solution, using the Weyl-Titchmarsh-Kodaira spectral theorem, for the spectral function of the one-dimensional diatomic molecule model consisting of two attractive delta function wells in the presence of a static external electric field. For sufficiently deep and far apart wells, this molecule supports both an even and an odd state, and the introduction of a...