Dirac and others combined the physical properties of vacuum space to predict a large energy in space, sometimes described in Planck units. Other researchers looked into the vacuum and found little energy there. Also the cosmological constant is small which might not agree with a strong energy field.
In other threads I have suggested that the physical laws reside in vacuum space and are enforced by the Dirac Sea of energy. In that work I partitioned the vacuum energy into four parts to correspond with the four forces with nearly equal parts of curving and reverse curving energy. The same concept can be represented in Lagrange functions and Lagrange density functions, where potential energy is curving like gravity and kinetic energy is reverse curving.
Zero Point energy was discussed for and against a source of the Dirac Sea. Casimir experiments eventually tilted the argument in favor of large energy in the Zero Point. Already discovered the charged W particles and neutral Z were found to have large energy in week interactions, more that the combined energy of interacting particles.
Other threads discussed the possibility that W and Z particles borrow energy from the vacuum governed by uncertainty principle for magnitude and time interval. A Higgs field was postulated from theory and decades later largely accepted as proven by experiments.
Discussions continued to find a vacuum expectation value for the Higgs field density. By estimate of one researcher the potential energy for Higgs is about 2.5×1045 J/m3, more than in a neutron star, but less than Planck energy. For nearly flat space this potential must be counter balanced by a kinetic energy field, possibly a Zero Point or some kinetic field that is not identified.
It seems that new discoveries can be made in properties of vacuum space.
How Does The Higgs Field Relate To The Dirac Sea Of Energy?