Scattering of cold 
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 on 
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Shalchi, M. A.; Delfino, A.; Frederico, T.; Tomio, Lauro

doi:10.1103/physreva.98.032705

Cited by 4 publications

(12 citation statements)

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“…Our study is also motivated by the interest on verifying manifestations of Efimov physics [42] in atomic reactions, following Ref. [43], which could support previous theoretical studies with three-body weakly-bound systems [44][45][46][47][48][49][50][51][52].…”

Section: Introductionmentioning

confidence: 58%

“…However, we select only (a1) and (a2), among the ones which are discussed in Refs. [43,86], as they are providing values for all the cases we are considering, having binding energies enough distinct for a significant comparative study.…”

Section: Reaction Rates and Modelsmentioning

confidence: 99%

“…Results obtained from Refs. [86] and [43], as indicated in the last row. In addition, for the excited states, we show results obtained by using zero-range (ZR) and finiterange (FR) one-term separable interactions.…”

Section: Channel Model Elastic Exchangementioning

confidence: 99%

“…Our aim is to explore the associated universal properties, which emerge in the studies of the reaction mechanisms of cold atoms with weakly-bound molecules. By following a previous investigation on s−wave scattering properties with the atomic species 4 He, 6 Li, 7 Li and 23 Na [43], with our present study we are providing a detailed analysis on atom-dimer dissociation and exchange reactions, in which we discuss and quantity the s, p and d lower partial-wave contributions to the associated reaction rates. The choice of these four atomic samples relies on the fact that the dimer and trimer binding energies are enough known, either from available realistic potential model calculations or from experiments as in the case of 4 He 2 , which provide support to our theoretical predictions.…”

Section: Introductionmentioning

confidence: 99%

“…II, we present the basic three-body formalism for two-atom mixtures, in which our main focus is on the case of atom-dimer collision, for separable We start by recovering some details from Ref. [43], in order to fix the notation of the formalism, summarizing the s−wave three-body bound-state coupled equation when considering separable potentials with all sub-systems being bound. We assume units such that = 1 (with energies given in mK), with m ≡ m α = m4 He and a mass ratio defined by A ≡ m β /m α .…”

Section: Introductionmentioning

confidence: 99%

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Cold atom-dimer reaction rates with $^4$He, $^{6,7}$Li and $^{23}$Na

Shalchi,

Yamashita,

Frederico

et al. 2020

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Atom-dimer exchange and dissociation reaction rates are predicted for different combinations of two 4 He atoms and one of the alkaline species among 6 Li, 7 Li and 23 Na, by using three-body scattering formalism with short-range two-body interactions. Our study was concerned with lowenergy reaction rates in which the s−, p− and d− wave contributions are the relevant ones. The 4 He is chosen as one of the atoms in the binary mixture, in view of previous available investigations and laboratory accessibilities. Focusing on possible experimental cold-atom realizations with twoatomic mixtures, in which information on atom-dimer reaction rates can be extracted, we predict the occurrence of a dip in the elastic reaction rate for colliding energies smaller than 20 mK, when the dimer is the 4 He 23 Na molecule. We are also anticipating a zero in the elastic p−wave contribution for the 4 He + 4 He 7 Li and 4 He + 4 He 23 Na reaction processes. With weakly-bound molecules reacting with atoms at very low colliding energies, we interpret our results on the light of Efimov physics which supports model independence and robustness of our predictions. Specific sensitivities on the effective range were evidenced, highlighted by the particular inversion role of the p− and d−waves in the atom exchange and dissociation processes.

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