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We report the experimental determination of the scattering parameters for a p-wave Feshbach resonance in a single component Fermi gas of 6 Li atoms in the lowest spin state. The time scale of the cross-dimensional relaxation reflects the elastic scattering rate of the atoms, and scattering parameters are determined from the scattering rate as a function of magnetic field by taking into account the momentum distribution and inhomogeneous density profile of the atoms in a trap. Precise determination of the scattering parameters for a p-wave Feshbach resonance is an important step toward the realization of a p-wave superfluid in an ultracold atomic gas.

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“…[32]. The measured magnetic field dependence of the scattering volume is also consistent with the calculation by Lysebo et al [33].…”

Section: Measurement Of Elastic Scattering Cross Sectionsupporting

confidence: 80%

Experimental determination ofp-wave scattering parameters in ultracold6Li atoms

2013

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“…A detailed description of the present model has been provided elsewhere [15]; thus, only a brief review is presented here. The Hamiltonian is written aŝ…”

Section: Theorymentioning

confidence: 99%

“…(5)- (7) are worked out in a molecular Hund's case (b) basis set and are given in detail in [15], together with a description of the molecular Hund's case (b) basis and its properties. Again we refer to [15] for further details.…”

Section: Theorymentioning

confidence: 99%

“…The interactions are, however, worked out in the molecular Hund's case (a) basis, which enables rather compact expressions for the matrix elements, along with the possibility to include the molecular short-range hyperfine interaction through calculation of only a few molecular hyperfine parameters. See [15] and references therein for an in-depth treatment of the model. The hyperfine energy levels of alkali-metal dimers has also been studied recently by Aldegunde et al [16].…”

Section: Introductionmentioning

confidence: 99%

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Feshbach resonances and transition rates for cold homonuclear collisions betweenK39andK41
Lysebo
¹
,
Veseth
²

2010
Phys. Rev. A
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48
3
47
0
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We report results from close-coupling calculations for homonuclear ultracold collisions between potassium atoms, using the most up-to-date Born-Oppenheimer potential curves. The present study includes both of the bosonic isotopes 39 K and 41 K. The s-wave scattering lengths as functions of the magnetic field strength for collisions between atoms in identical and different hyperfine states are obtained. Several Feshbach resonances are located and characterized for both isotopes. Comparison with experiments, where such data are available, show excellent agreement. We also study weakly bound molecular states of the K 2 molecule in close relation to the calculated Feshbach resonances. Another objective of the present work is to study inelastic collisions in which the hyperfine states of the colliding atoms are changed. From this type of calculation we obtain transition rates as functions of the magnetic field strength. Finally, we discuss how such transition rates might be of importance for experimental work.

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“…The p-wave Feshbach molecules have also been created and studied in the gases of 40 K [6,7] and 6 Li [8,[10][11][12]. These experimental achievements stimulate theoretical researches on the quantum superfluid in ultracold atomic gases with strong p-wave interactions , as well as the relevant few-body problems [52][53][54][55][56][57][58][59][60][61][62][63][64][65].…”

Section: Introductionmentioning

confidence: 99%

Scattering amplitude of ultracold atoms near thep-wave magnetic Feshbach resonance

Zhang

Naidon²,

Ueda

2010

Phys. Rev. A

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Most of the current theories on the p-wave superfluid in cold atomic gases are based on the effective-range theory for the two-body scattering, where the low energy p-wave scattering amplitude f1(k) is given by f1(k) = −1/[ik + 1/(Vk 2 ) + 1/R], where k is the incident momentum, and V and R are the k-independent scattering volume and effective-range, respectively. However, due to the long-range nature of the van der Waals interaction between two colliding ultracold atoms, the p-wave scattering amplitude of the two atoms is not described by the effective-range theory [1, 2]. In this paper we provide an explicit calculation for the p-wave scattering of two ultracold atoms near the p-wave magnetic Feshbach resonance (PMFR). We show that the low energy pwave scattering amplitude in the presence of PMFR takes the form f1(where V eff , S eff and R eff are k-dependent parameters. Based on this result, we show sufficient conditions for the effective range theory to be a good approximation of the exact scattering amplitude. Using these conditions we show that the effective-range theory is a good approximation for the p-wave scattering in the ultracold gases of 6 Li and 40 K when the scattering volume is enhanced by the resonance.

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Ab initiocalculation of Feshbach resonances in cold atomic collisions:s- andp-wave Feshbach resonances inL6

Cited by 13 publications

References 45 publications

Experimental determination ofp-wave scattering parameters in ultracold6Li atoms

Experimental determination ofp-wave scattering parameters in ultracold6Li atoms

Feshbach resonances and transition rates for cold homonuclear collisions betweenK39andK41
Lysebo
¹
,
Veseth
²

2010
Phys. Rev. A
Self Cite
48
3
47
0
View full text Add to dashboard Cite

Scattering amplitude of ultracold atoms near thep-wave magnetic Feshbach resonance

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Ab initiocalculation of Feshbach resonances in cold atomic collisions:s- andp-wave Feshbach resonances inL6

Cited by 13 publications

References 45 publications

Experimental determination ofp-wave scattering parameters in ultracold6Li atoms

Experimental determination ofp-wave scattering parameters in ultracold6Li atoms

Feshbach resonances and transition rates for cold homonuclear collisions betweenK39andK41Lysebo1, Veseth2 2010Phys. Rev. ASelf Cite483470View full textAdd to dashboardCite

Scattering amplitude of ultracold atoms near thep-wave magnetic Feshbach resonance

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Resources

About

Feshbach resonances and transition rates for cold homonuclear collisions betweenK39andK41
Lysebo
¹
,
Veseth
²

2010
Phys. Rev. A
Self Cite
48
3
47
0
View full text Add to dashboard Cite