Shiva is energy. Uma which means quiet is potential energy in matter forms. durgA which means impassable or cannot be crossed over, is kinetic energy of matter forms. Tripura sundari is the vacuum energy that fills the three dimensional empty space.
Adi Shankaracharya calls 'mInAksI' as the ocean of bliss that fills the inside of all, becomes their fundamental 'rhythm' on which they are built, combination of Sri-Vidhya and Uma, the true/fundamental/realistic form of Shiva or the representation of Shiva, to whom Vishnu, Brahma and Indra submit to or make use of, that which is more elder/respected/senior than vAni and rama, but junior to nArAyaNa.
According to science, the bliss that fills the inside of all, the fundamental rhythm underlying all, the fundamental and true representation of energy in all matter and beings is oscillations of zero-point energy. Zero point energy is a combination of Kinetic and potential energy. Mass, Spacetime curvature/gravity and all matter forms make use or arise using this zero-point energy. Zero-point energy probably appeared after cold dark matter and is elder to all the matter forms and their entropies.
Zero-point energy is one of the ways in which the vacuum energy is perceived.
Vacuum Energy - Three forms of perception
The vacuum energy can be perceived in 3 ways in the real world. They are
1. kAmAkSi - kAma means excitations. The vacuum fluctations or excitations of the ocean of vacuum that lead to virtual particles and their effects on real world is how the vacuum energy is perceived.
2. mInAkSi - mIna means fish. The zero-point of energy of any quantized field or particle, the 'fish' (mIna) in the ocean of vacuum.
3. vizAlAkSi - vizAla means broad, wide, expanded etc. In physical cosmology, the cosmological constant contributes to expansion of Universe or negative gravitational field due to vacuum energy that accelerates expansion of Universe.
Hence mInAkSi is none other than tri-pura sundari, the vacuum energy as is kAmAksI and vizAlAkSi. mInAksi is one way in which tri-pura sundari is perceived.
Sri Chakra in my understanding roughly represents the 'quantization' of energy levels in the atoms. The four shells and four sub-shells of any known elements is what is drawn as 4 concentric triangles and 4 concentric triangle upside down. Their intersection creates the Sri chakra.
The center of this Quantization levels is the zero-point energy of particles or matter forms, the mInAksi. It is from this zero point energy of vacuum energy, due to quantized fluctuations of energy (kAmAksi) different particles and matter forms manifest.
mInAkSi - The zero-point energymInAkSi is more specifically the zero-point energy of all particles. Hence mInAkSi is described as the fundamental 'rhythm' or nAda brahmam of the Universe. She is the hidden 'hrim-kAra'.
mInAkSi, the zero-point energy is the true or fundamental form of Shiva, the energy in all matter forms. It is expressed or identified through the matter (ornaments) and biological forms (garlands) expressed in the Universe.
As mInAkSi is about zero-point energy of matter forms, vishnu, the property of mass, Brahma the four dimensional spacetime and Indra the atomic nucleus or protons submit to this mInAkSi or arise on this mInAkSi.
Like the small bells of an ankle jewel are hidden, but cause the sounds, zero-point energy is hidden inside as potential, that fulfills all the 'desires'. She is 'elder' to both sarasvati (information/entropy) and lakshmi (matter wealth) and hence they serve her.
mInAkSi, the zero-point energy is a combination of Sri-Vidhya, the kinetic energy as well as Uma, the potential energy. It is in the center of Sri-Cakra and gives rises to Work done (Vinayaga) and Heat (Skanda) and through that binds all matter and beings.
This zero-point energy is dark and hosts all other divinities. It gives rise to entropy or different information states or jnAnA. It is born younger to nArAyaNa the form of cold dark matter.