zero point energy
Zero energy, or quantum vacuum Zero energy, is the lowest energy a quantum mechanical system can have and is the energy of its bottom state. The quantum mechanical system fluctuates in the ground state due to its wave nature and has zero energy accordingly. According to the uncertainty principle, all physics must have zero energy greater than the minimum of the potential wells according to classical mechanics. This allows movement to occur in absolute spirit. For example, liquid helium does not freeze at any temperature under atmospheric pressure, which is the zero point energy.