Contact: Laura Ost
National Institute of Standards and Technology (NIST)
Caption: This is an illustration of the interaction energies between ultracold potassium-rubidium molecules trapped in a "lattice" made of intersecting laser beams. The colors indicate each molecule's interaction with the molecule located in the center of the lattice (green), for a specific magnetic-field direction (purple arrow). Blue indicates attractive interactions, and red indicates repulsive interactions. Darker colors indicate higher interaction energy.
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