We develop a cosmological framework in which the quantum vacuum is modeled as a coherent superfluid medium, the Superfluid Energy Field (SEF), characterized by an order parameter = e^i. Within this approach, spacetime geometry is not assumed to be fundamental, but arises as an effective large-scale description of the hydrodynamic and phase structure of the vacuum. In this setting, cosmological redshift is described as a non-metric process associated with the cumulative evolution of photon energy in a dynamical medium governed by local phase dynamics. The same mechanism defines an intrinsic phase cadence _ = ₜ, which provides an operational basis for proper time while remaining consistent with local relativistic constraints. The large-scale evolution of the system is governed by the relaxation dynamics of topological defects, leading to an effective expansion rate H₄₅₅ determined by the internal state of the field. In this picture, accelerated expansion can emerge without introducing a fundamental cosmological constant. Structure formation is described as a hydrodynamic response of the medium, where galaxies correspond to pressure minima and flat rotation curves arise as stationary solutions of a quantum fluid, without requiring a separate dark matter component at the effective level. The Cosmic Microwave Background is interpreted as a quasi-equilibrium state of the incoherent sector, sustained by a non-equilibrium thermodynamic cycle. The framework leads to distinct and testable predictions, including environment-dependent redshift, anisotropic effective expansion rates, refractive lensing effects, and frequency-independent polarization rotation in cosmic voids. These signatures provide observational discriminants with respect to both CDM and modified gravity scenarios, making the approach directly falsifiable with current and upcoming surveys.
Nathalie Puccio (2026) studied this question.