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Cold atom-molecule photoassociation: long-range interactions beyond the 1/Rn expansion

Identifieur interne : 004781 ( PascalFrancis/Curation ); précédent : 004780; suivant : 004782

Cold atom-molecule photoassociation: long-range interactions beyond the 1/Rn expansion

Auteurs : M. Lepers [France] ; O. Dulieu [France]

Source :

RBID : Pascal:12-0019050

Descripteurs français

English descriptors

Abstract

We investigate theoretically the combination of first-order quadrupole-quadrupole and second-order dipole-dipole effects on the long-range electrostatic interactions between a ground-state homonuclear alkali-metal dimer and an excited alkali-metal atom. As the electrostatic energy is comparable to the dimer rotational structure, we develop a general description of the long-range interactions in the framework of the second-order degenerate perturbation theory, which allows for couplings between the dimer rotational levels. The resulting adiabatic potential energy curves exhibit avoided crossings, and cannot be expanded as the usual 1/Rn series. We study in details the particular case Cs2+Cs(62P). Our results are found promising to achieve photoassociation of ultracold trimers.
pA  
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A03   1    @0 Eur. phys. j., D At. mol. opt. phys.
A05       @2 65
A06       @2 1-2
A08 01  1  ENG  @1 Cold atom-molecule photoassociation: long-range interactions beyond the 1/Rn expansion
A09 01  1  ENG  @1 Cold Quantum Matter
A11 01  1    @1 LEPERS (M.)
A11 02  1    @1 DULIEU (O.)
A12 01  1    @1 BIRKL (Gerhard) @9 ed.
A12 02  1    @1 FOOT (Christopher) @9 ed.
A12 03  1    @1 FREEGARDE (Tim) @9 ed.
A12 04  1    @1 GRIMM (Rudolf) @9 ed.
A12 05  1    @1 HUTSON (Jeremy M.) @9 ed.
A12 06  1    @1 WEIDEMÜLLER (Matthias) @9 ed.
A14 01      @1 Laboratoire Aime Cotton, CNRS, Bât. 505, Univ. Paris-Sud @2 91405 Orsay @3 FRA @Z 1 aut. @Z 2 aut.
A15 01      @1 University of Darmstad @3 DEU @Z 1 aut.
A15 02      @1 University of Oxford @3 GBR @Z 2 aut.
A15 03      @1 University of Southampton @3 GBR @Z 3 aut.
A15 04      @1 University of Innsbruck @3 AUS @Z 4 aut.
A15 05      @1 University of Durham @3 GBR @Z 5 aut.
A15 06      @1 University of Heidelberg @3 DEU @Z 6 aut.
A20       @1 113-123
A21       @1 2011
A23 01      @0 ENG
A43 01      @1 INIST @2 26689 @5 354000507325860140
A44       @0 0000 @1 © 2012 INIST-CNRS. All rights reserved.
A45       @0 74 ref.
A47 01  1    @0 12-0019050
A60       @1 P
A61       @0 A
A64 01  1    @0 The European physical journal. D, Atomic, molecular and optical physics : (Print)
A66 01      @0 FRA
C01 01    ENG  @0 We investigate theoretically the combination of first-order quadrupole-quadrupole and second-order dipole-dipole effects on the long-range electrostatic interactions between a ground-state homonuclear alkali-metal dimer and an excited alkali-metal atom. As the electrostatic energy is comparable to the dimer rotational structure, we develop a general description of the long-range interactions in the framework of the second-order degenerate perturbation theory, which allows for couplings between the dimer rotational levels. The resulting adiabatic potential energy curves exhibit avoided crossings, and cannot be expanded as the usual 1/Rn series. We study in details the particular case Cs2+Cs(62P). Our results are found promising to achieve photoassociation of ultracold trimers.
C02 01  3    @0 001B30A15M
C02 02  3    @0 001B30D50R
C02 03  3    @0 001B30C80P
C03 01  3  FRE  @0 Photoassociation @5 03
C03 01  3  ENG  @0 Photoassociation @5 03
C03 02  X  FRE  @0 Interaction longue distance @5 04
C03 02  X  ENG  @0 Long range interaction @5 04
C03 02  X  SPA  @0 Interacción larga distancia @5 04
C03 03  X  FRE  @0 Interaction électrostatique @5 05
C03 03  X  ENG  @0 Electrostatic interaction @5 05
C03 03  X  SPA  @0 Interacción electrostática @5 05
C03 04  3  FRE  @0 Atome froid @5 11
C03 04  3  ENG  @0 Cold atom @5 11
C03 05  3  FRE  @0 Etude théorique @5 21
C03 05  3  ENG  @0 Theoretical study @5 21
C03 06  3  FRE  @0 Théorie perturbation @5 23
C03 06  3  ENG  @0 Perturbation theory @5 23
C03 07  X  FRE  @0 Courbe potentiel @5 24
C03 07  X  ENG  @0 Potential energy curve @5 24
C03 07  X  SPA  @0 Curva potencial @5 24
C03 08  X  FRE  @0 Croisement évité @5 25
C03 08  X  ENG  @0 Avoided crossing @5 25
C03 08  X  SPA  @0 Cruce evitado @5 25
C03 09  3  FRE  @0 Etat fondamental @5 41
C03 09  3  ENG  @0 Ground states @5 41
C03 10  3  FRE  @0 Etat rovibrationnel @5 42
C03 10  3  ENG  @0 Rotational-vibrational states @5 42
C03 11  3  FRE  @0 Molécule ultrafroide @2 NK @5 57
C03 11  3  ENG  @0 Ultracold molecules @2 NK @5 57
C03 12  3  FRE  @0 Métal alcalin @2 NC @5 61
C03 12  3  ENG  @0 Alkali metals @2 NC @5 61
C03 13  3  FRE  @0 Collision atome molécule @5 62
C03 13  3  ENG  @0 Atom-molecule collisions @5 62
C03 14  X  FRE  @0 Collision sous rayonnement @5 63
C03 14  X  ENG  @0 Radiation assisted collision @5 63
C03 14  X  SPA  @0 Colisión bajo radiación @5 63
C03 15  3  FRE  @0 3450R @4 INC @5 83
C03 16  3  FRE  @0 3380P @4 INC @5 84
C03 17  3  FRE  @0 3115M @4 INC @5 91
C03 18  3  FRE  @0 Molécule froide @4 CD @5 96
C03 18  3  ENG  @0 Cold molecules @4 CD @5 96
N21       @1 002

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<div type="abstract" xml:lang="en">We investigate theoretically the combination of first-order quadrupole-quadrupole and second-order dipole-dipole effects on the long-range electrostatic interactions between a ground-state homonuclear alkali-metal dimer and an excited alkali-metal atom. As the electrostatic energy is comparable to the dimer rotational structure, we develop a general description of the long-range interactions in the framework of the second-order degenerate perturbation theory, which allows for couplings between the dimer rotational levels. The resulting adiabatic potential energy curves exhibit avoided crossings, and cannot be expanded as the usual 1/R
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