A potential reason that General Relativity is not subject to the same extreme limitations as the quantum inequalities is that the properties of spacetime change at different scales. By exploring the geometrical properties of spacetimes by calculating the spectral dimension associated with them, it was found that a larger scale spectral dimension reaches a more classical value (Benedetti, 2009). This is a possible explanation that semi-classical models are self-inconsistent, and General Relativity and Quantum Field Theory are unresolvable. Since the generation of quantized negative energy may have fractal properties, an Alcubierre drive may require engineering at different magnitudes of scale.
An approach to Alcubierre experimentation using fractal physics may be more helpful since cosmological observations suggest existing theory based on observable phenomena is incomplete (Green, 2014). Taking survey results from Wilkinson Microwave Anisotropy Probe into account, the low amount of measurable ordinary baryonic matter, \(4.628\% \pm 0.093\%\) (Beringer et al., 2014), leaves much more room to consider new theory to explain the remaining “dark energy” measured in the universe.