Quantum entanglement: Non-local correlations violate Bell inequalities (CHSH > 2√2). Extend to ER=EPR: wormhole bridges entangle black hole interiors, enabling effective dimensional shortcuts.

Dimensional travel: Compactify extra dimensions (Calabi-Yau manifolds). Braneworld scenarios allow 3-brane motion in 5D anti-de Sitter bulk; induce apparent FTL via gauge/gravity duality.

Multiverse: Eternal inflation spawns bubble universes with varying Λ. Quantum Darwinism selects decohered branches; many-worlds interpretation predicts 2^{N} splits per N qubits—test via weak measurements on entangled photons.

Push: Entanglement-induced spacetime curvature (quantum gravity foam) may permit controlled micro-wormholes for macro-scale “travel” across branches. Experiment: entangle 10^3 Rydberg atoms, probe gravitational anomalies. Site: ray.services/whitepaper