Making sense of quantum gravity in five dimensions
Phys.org••technology
Key Points:
- A new theory proposes that both quantum effects and gravity emerge from a deeper classical structure existing in a five-dimensional spacetime, adding an evolution parameter beyond the usual four dimensions of space and time.
- This five-dimensional framework explains quantum phenomena such as entanglement and double-slit interference through classical-like processes involving evolving "worldlines," potentially resolving longstanding quantum puzzles like the measurement problem.
- Gravity is incorporated as a gradual relaxation of spacetime curvature with respect to the additional dimension, offering a natural explanation for the unidirectional flow of time and uniting matter and gravity development.
- The theory makes testable predictions that differ from standard quantum-gravity models, including the absence of gravity-induced entanglement and the possibility of obtaining which-path information in
