Ab initio relativistic calculation of the RbCs molecule
1Department of Physics, Temple University, Philadelphia, Pennsylvania 19122, USA. svetlana.kotochigova@nist.gov
Researchers calculated properties of the rubidium cesium (RbCs) dimer using advanced computational methods. This provides crucial data for creating and maintaining ultracold RbCs molecules in experiments.
Area of Science:
- Atomic and Molecular Physics
- Quantum Chemistry
Background:
- Alkali-metal dimers are crucial for studying quantum phenomena.
- Precise molecular data is needed for ultracold molecule applications.
Purpose of the Study:
- To calculate key properties of the RbCs dimer.
- To provide data for optimizing ultracold molecule experiments.
Main Methods:
- Relativistic configuration-interaction valence-bond method.
- Extended basis sets from Dirac-Fock and Sturm's orbitals.
Main Results:
- Calculated electronic potentials and transition dipole moments.
- Determined permanent dipole moments for ground and excited states.
- Estimated rovibrational level lifetimes due to blackbody radiation.
Conclusions:
- The calculated data aids in optimizing photoassociative formation of ultracold RbCs molecules.
- Findings support enhancing the longevity of RbCs molecules in traps and optical lattices.
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