Rb2, or rubidium dimer, is a molecule formed by two rubidium (Rb) atoms. Rubidium is an alkali metal found in group 1 of the periodic table, known for its low melting point and high reactivity. Rb2 is of interest in various fields, including quantum physics and chemistry, due to its unique properties and behavior at low temperatures. In experiments, Rb2 can be created using techniques like laser cooling and trapping. This allows scientists to study its interactions and characteristics in detail. Understanding Rb2 contributes to advancements in areas such as ultracold chemistry and quantum computing, where control over molecular states is crucial.