Tareq Unified Spacetime Theory (TUST V4): Unified Geometric Framework with TSST Stability, Repulsive Curvature, and Cyclic Cosmology

This document presents TUST V4, the latest and most complete version of the Tareq Unified Spacetime Theory. TUST V4 describes spacetime as a Planck-scale, information-carrying geometric medium governed by the Tareq Spacetime Stability Theory (TSST). In this framework, gravity, quantum behaviour, cosmic acceleration, and the nonsingular bounce all emerge from geometric stability and instability rather than additional fields or dark-sector components. Repulsive curvature appears naturally at both high curvature (preventing singularities and producing a bounce) and low curvature (producing late-time acceleration without dark energy). A unified geometric fluid F(a) replaces inflation, dark matter, and dark energy as separate assumptions, instead generating all cosmic eras from one geometric mechanism. Quantum phenomena arise from unstable curvature (superposition, tunnelling, entanglement), while classical physics emerges from stability. Holographic information storage and Planck-area entropy ensure that information is preserved across cosmic cycles. This file serves as the official Zenodo archival version, uploaded under the filename Tust v4, representing the fully upgraded TUST V8 structural theory. Email: [email protected]