The Unattainability of Absolute Zero as a Manifestation of the Zero-Point Activity of the Quantum Field of Space

This paper interprets the unattainability of absolute zero as a manifestation of the ineliminable zero-point activity of the quantum field filling space. It rests directly on two established results — the third law of thermodynamics (unattainability in a finite number of steps) and the zero-point energy of quantum systems (from the uncertainty principle), whose physical reality is confirmed by the Casimir effect — and does not seek to replace them. Its contribution is conceptual: it ties the zero-point energy to the author’s primordial-field program, interpreting it as the activity of the same field from whose condensations particles arise. Near-zero phenomena (superfluidity, superconductivity, BEC) are treated not as “proof of unattainability” but as evidence that coherent quantum activity persists at the limit of low temperatures. A testable criterion (via the Casimir effect) and a falsification condition are given.