Spacetime Fluidity Hypothesis

A hypothesis that spacetime, under extreme conditions (e.g., near singularities or at the Planck scale), behaves less like a rigid manifold and more like a fluid or superfluid—exhibiting viscosity, flow, and even turbulence. Drawing from analogies with condensed matter physics, it suggests that what we experience as the geometry of spacetime might be an emergent property of a deeper, fluid‑like substrate. This idea has been explored in approaches like analog gravity, where physical systems (e.g., flowing liquids) mimic curved spacetime, and in some quantum gravity models that treat spacetime as a Bose‑Einstein condensate.

Example: “Spacetime fluidity hypothesis offered a new way to think about the Big Bang: not an explosion of a fixed container, but a phase transition in a cosmic superfluid.”

by Abzugal March 27, 2026