Symmetry-adapted perturbation theory applied to interaction-induced properties of collisional complexes

Heijmen, Tino G. A.; Moszyński, Robert; Wormer, Paul E. S.; Avoird, Ad van der

doi:10.1080/002689796174029

Cited by 70 publications

(69 citation statements)

References 91 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The behaviour at large internuclear distances is well approximated by Silberstein's formula in terms of atomic polarizabilities [23,24]. We consider 88 Sr atoms trapped at a temperature of 1 µK.…”

Section: Theoretical Frameworkmentioning

confidence: 99%

Enhancing photoassociation rates by nonresonant-light control of shape resonances

González‐Férez

Koch

2012

Phys. Rev. A

View full text Add to dashboard Cite

Photoassociation, assembling molecules from atoms using laser light, is limited by the low density of atom pairs at sufficiently short interatomic separations. Here, we show that non-resonant light with intensities of the order of 10 10 W/cm 2 modifies the thermal cloud of atoms, enhancing the Boltzmann weight of shape resonances and pushing scattering states below the dissociation limit. This leads to an enhancement of photoassociation rates by several orders of magnitude and opens the way to significantly larger numbers of ground state molecules in a thermal ensemble than achieved so far.

show abstract

Section: Theoretical Frameworkmentioning

confidence: 99%

Enhancing photoassociation rates by nonresonant-light control of shape resonances

González‐Férez

Koch

2012

Phys. Rev. A

View full text Add to dashboard Cite

show abstract

“…They fitted the results to empirical functional forms based on the known asymptotic behaviour of diatomic polarizabilities [22]. However, they stated that the proper asymptotic functional form for atomdiatom dispersion coefficients was unknown.…”

Section: Atom-diatom Limitmentioning

confidence: 99%

Long range intermolecular forces in triatomic systems: connecting the atom–diatom and atom–atom–atom representations

2006

View full text Add to dashboard Cite

The long-range forces that act between three atoms are analysed in both atom-diatom and atomatom-atom representations. Expressions for atom-diatom dispersion coefficients are obtained in terms of 3-body nonadditive coefficients. The anisotropy of atom-diatom C6 dispersion coefficients arises primarily from nonadditive triple-dipole and quadruple-dipole forces, while pairwise-additive forces and nonadditive triple-dipole and dipole-dipole-quadrupole forces contribute significantly to atom-diatom C8 coefficients. The resulting expressions are applied to dispersion coefficients for Li + Li2 (triplet) and recommendations are made for the best way to obtain global triatomic potentials that dissociate correctly both to three separated atoms and to an atom and a diatomic molecule.

show abstract

“…The graphical technique proved indispensable to handle the very complicated angular momentum algebra arising in this work. Also the theory of long-range interaction-induced properties of collisional complexes [63] benefited greatly from the aid of the diagrammatic technique. Recently the long-range interaction energy between atoms in arbitrary angular momentum states was worked out [64].…”

Section: Discussionmentioning

confidence: 99%

Angular Momentum Diagrams

Wormer

Paldus

2006

Advances in Quantum Chemistry

View full text Add to dashboard Cite

Starting from the simplest possible building blocks-a ket, a bra, a time-reversed ket, and a time-reversed braa diagrammatic formalism is developed for angular momentum coupling problems. The formalism comprises Clebsch-Gordan coefficients as well as 3j m-symbols. The idea of constructing invariants (internal lines) by contracting contragredient pairs of quantities is emphasized throughout. The Clebsch-Gordan series, and its extension to the coupling of more than two angular momenta, is introduced algebraically and diagrammatically. Recoupling between bases obtained in different coupling schemes is introduced and the connection between recoupling coefficients and irreducible 3nj -symbols is derived diagrammatically. The well-known diagrammatic rules due to Jucys and co-workers are derived by group theoretical means and simple rules for their practical exploitation are presented.

show abstract

Symmetry-adapted perturbation theory applied to interaction-induced properties of collisional complexes

Cited by 70 publications

References 91 publications

Enhancing photoassociation rates by nonresonant-light control of shape resonances

Enhancing photoassociation rates by nonresonant-light control of shape resonances

Long range intermolecular forces in triatomic systems: connecting the atom–diatom and atom–atom–atom representations

Angular Momentum Diagrams

Contact Info

Product

Resources

About