Here I am

A Bose–Einstein condensate (BEC) is a state of matter of a dilute gas of weakly interacting bosons confined in an external potentialand cooled to temperatures very near absolute zero (0 K or −273.15 °C^[1]). Under such conditions, a large fraction of the bosons occupy the lowest quantum state of the external potential, at which point quantum effects become apparent on a macroscopic scale. These effects are called macroscopic quantum phenomena.