Barzakh as a Cosmic Principle: Between Two Worlds

There are questions that live at borders — belonging neither fully to what is here nor to what is there. Perhaps barzakh, in Ibn Arabi’s deepest sense of the word, is the name given to this liminal mode of existence: a strange entity that cannot be called "the thing" nor "its opposite," but is instead the region where one reality passes into another without dissolving into it.

In the Meccan Revelations and the Bezels of Wisdom, Ibn Arabi defines barzakh in a way that goes beyond anything familiar in classical Islamic theology (kalam). For him, barzakh is not merely an intermediate "world" between death and resurrection — though that is one of its manifestations — it is an existential principle running through the entire structure of the cosmos: the imagination is a barzakh between the Divine Presence and raw matter; the spirit is a barzakh between the absolute and the relative; the word is a barzakh between silence and meaning. Human existence itself, in Ibn Arabi’s reading, is the greatest barzakh of all, since it is the unifying boundary in which the dense and the subtle coexist within a single being.

Philosophically, this means reality is not made of clean edges and absolute divisions. Every apparent duality — being and non-being, God and creation, the intelligible and the sensible — cannot be properly grasped unless we also grasp the barzakh between the two poles. The dividing line is not an absence; it is a presence of another kind.

A methodological note before turning to physics: what follows is not a comparison between two equivalent systems. Barzakh, for Ibn Arabi, is an ontological-mystical concept, not subject to measurement or empirical falsification, while the quantum vacuum is a precise mathematical-empirical concept that is, in fact, measured. Any parallel drawn between them is a parallel of conceptual structure, not of the nature of the claim or its degree of certainty. Reading what follows as a "proof" fundamentally misunderstands the point of the exercise.

The Quantum Vacuum: Physics' Own Barzakh

Contemporary physicists face a puzzling phenomenon: the vacuum is not empty. What they call the quantum vacuum is a state of lowest possible energy, yet it seethes with so-called "zero-point fluctuations" — virtual particles that spring from nothing and vanish within fractions of a second. This is not mathematical fantasy; it is a measurable phenomenon, expressed through the Casimir force, which pulls two nearby metal plates together due to the pressure of this "effective" vacuum.

This vacuum, then, is neither manifest existence nor absolute nothingness — it is a region of pure potential: nothing is actually present, yet everything is potentially present. For a contemplative mind, this description strikingly mirrors what Ibn Arabi called the primary barzakh, the one joining absolute unseen-ness (al-ghayb al-mutlaq) to cosmic manifestation.

Hartle and Hawking go further still in their no-boundary proposal: they suggest that in the universe's first moments, time itself was "imaginary" — meaning there was no strict linear beginning-point in the ordinary sense. The universe did not "begin" as an event occurring at an instant; it emerged the way the edge of a solid sphere appears — no sharply defined starting point. This is a kind of temporal barzakh: no before, no after, but a generative, transitional state that ordinary tools cannot describe.

Why This Resemblance Is Weaker Than It Looks

The gap between the two approaches is deep, but what matters more than pointing this out is identifying exactly where the comparison collapses: the quantum vacuum "seethes" with virtual particles within conserved laws (conservation of energy, the uncertainty principle) — and these very laws are already a pre-existing structure, not true nothingness in any sense. Barzakh, for Ibn Arabi, is not a physical state governed by laws; it is a metaphysical principle that precedes every law. When we say the quantum vacuum "resembles" barzakh, we are, in truth, projecting a mystical concept onto a system with a fully self-contained mathematical structure that needs no such projection to be understood.

So what survives after this stripping away? Only this: that the human mind, in both traditions, found itself compelled to invent a third category between "existent" and "non-existent," because the two traditional categories were not enough to describe what it had observed. It is this recurring compulsion — appearing across two traditions with no historical connection — that is genuinely remarkable, not any equivalence between the two concepts themselves.