zero-point energy

Definition

The lowest possible energy of a given quantum mechanical system.

Etymology

Calque of German Nullpunktenergie.

Example Sentences

• "The existence of a zero-point energy (i.e., the existence of a non-zero lower limit to the energy of a quantum-mechanical system) is a consequence of Heisenberg's uncertainty principle."
• "2000, Stephen T. Thornton, Andrew F. Rex, Modern Physics for Scientists and Engineers, Saunders College Publishing, page 205, Our estimate for the zero-point energy of the harmonic oscillator is hbar ω/2."
• "The calculated zero-point energies of hydrogen at inner bulk, GB, and FS are within 0.12-0.16eV/H."