Calculation of the interspecies s-wave scattering length in an ultracold Na-Rb vapor

Abstract

We report the calculation of the interspecies scattering length for the sodium-rubidium (Na-Rb) system. We present improved hybrid potentials for the singlet $X^1{\Sigma }^{+}$ and triplet $a^3{\Sigma }^{+}$ ground states of the NaRb molecule, and calculate the singlet and triplet scattering lengths $a_s$ and $a_t$ for the isotopomers ${}^{23}$Na${}^{87}$Rb and ${}^{23}$Na${}^{85}$Rb. Using these values, we assess the prospects for producing a stable two-species Bose-Einstein condensate in the Na-Rb system.

v2: report correct units in Table captions, fix error in conclusions for ${}^{23}$Na${}^{85}$Rb TBEC. Otherwise, more concise presentation, typos fixed. 6 pages, 1 figure

References in corpus (7)

• A quasi-pure Bose-Einstein condensate immersed in a Fermi sea
• Two-species mixture of quantum degenerate Bose and Fermi gases
• Inter-isotope determination of ultracold rubidium interactions from three high-precision experiments
• A two atomic species superfluid
• Fermi-Bose quantum degenerate ^40 K - ^87 Rb mixture with attractive interaction
• High-precision calculations of van der Waals coefficients for heteronuclear alkali-metal dimers
• Collisional properties of ultracold K-Rb mixtures

Cited by in corpus (11)

• Self-localized impurities embedded in a one dimensional Bose-Einstein condensate and their quantum fluctuations
• Collective decoherence of cold atoms coupled to a Bose-Einstein condensate
• The potential of the ground state of NaRb
• A binary mixture of spinor atomic Bose-Einstein condensates
• The higher order C_n dispersion coefficients for the alkali atoms
• Scattering parameters for cold-Li-Rb and Na-Rb collisions derived from variable phase theory
• Spontaneously axisymmetry breaking phase in a binary mixture of spinor Bose-Einstein condensates
• Interspecies singlet pairing in a mixture of two spin-1 Bose condensates
• Quantum spin mixing in a binary mixture of spin-1 atomic condensates
• S-wave and p-wave scattering in a cold gas of Na and Rb atoms
• Fragmentation of a spin-1 mixture in a magnetic field