"quantum vacuum" is a correct and usable phrase in written English.
It is used to refer to a theoretical empty space that may contain fleeting electromagnetic waves and particles that pop into and out of existence. For example, "The quantum vacuum is said to contain virtual particles which are too small and short-lived to ever be observed."
Liberati, S., Prain, A. & Visser, M. Quantum vacuum radiation in optical glass.
All this adds up to the apparent creation of something from nothing by borrowing energy from the quantum vacuum.
Through the interaction with the quantum vacuum, the mass of the Higgs particle should be about 1017 times higher than the actual Higgs mass measured at the LHC.
We observe spontaneous Hawking radiation, stimulated by quantum vacuum fluctuations, emanating from an analogue black hole in an atomic Bose Einstein condensate.
We want to introduce an atomic pendulum whose driving force (torque) is due to the quantum vacuum fluctuations.
Supersymmetry modifies the quantum vacuum and can explain naturally why the Higgs boson is light, provided that the mass of the superparticles is not too large, i.e. in reach of the LHC.
In addition, the deconfined quanta of a QGP are not directly observable due to the fundamental confining property of the physical quantum chromodynamics vacuum, i.e. the properties of the underlying quantum-field theory governing its interactions.
It may be connected with quantum-mechanical vacuum energy; however, there are serious unresolved difficulties with this possibility.
Under the rules of quantum mechanics, a vacuum generates an attractive force between two metallic surfaces.
However, in quantum mechanics, a vacuum is not empty, but a continually burbling cauldron of "virtual particles" that appear and disappear so quickly that they cannot be detected.
According to quantum theory, a vacuum is far from empty: it seethes with photons that pop into and out of existence.
