It goes the same for this explanation of ZPF (from your source Mr. Skyfish)
How can you have a FIELD without tensors and vectors? There is no electromagnetism in a so called ZPF.... because there is no magnetic field or electric field tensors.Zero-Point Field
The Zero-Point Field (ZPF) is said to exist in a vacuum -- what is commonly thought of as empty space -- at a temperature of absolute zero (where all thermal radiation is absent; a condition obtained when reaching a temperature of absolute zero on the Kelvin scale). The background energy of the vacuum serves as the reference, or zero point, for all processes. Theoretical considerations indicate the ZPF should be a background sea of electromagnetic radiation that is both uniform and isotropic (the same in all directions).
The uniform and isotropic nature of the ZPF is important, and explains why it is not readily observed. Fundamentally, the lack of asymmetry of the ZPF prevents its easy identification, just as a fish being absolutely still in a sea of constant temperature and pressure water is unable to detect the water itself.
OOPS ...My mistake.....
OK.... I see now. This is something I found in Wiki...
I see now.... ZPF is RELATED to ZPE, and the field itself is the background radiation which is demonstrated in the cosmological constant. The COBE satellite photo shows the intensity of this field everywhere except for the thick part of our milky way galaxy which hides the radiation comming from elswhere.A related term is zero-point field, which is the lowest energy state of a field; i.e. its ground state, which is non-zero.[3]
trickfox