LENR's connection to artificial gravity.
https://www.ncbi.nlm.nih.gov/pubmed/24598730
Extraordinary momentum and spin in evanescent waves. - NCBI
"Momentum and spin represent fundamental dynamical properties of quantum particles and fields. In particular, propagating optical waves (photons) carry momentum and longitudinal spin determined by the wave vector and circular polarization, respectively. Here we show that exactly the opposite can be the case for evanescent optical waves. A single evanescent wave possesses a spin component, which is independent of the polarization and is orthogonal to the wave vector.
Furthermore, such a wave carries a momentum component, which is determined by the circular polarization and is also orthogonal to the wave vector. We show that these extraordinary properties reveal a fundamental Belinfante’s spin momentum, known in field theory and unobservable in propagating fields. We demonstrate that the transverse momentum and spin push and twist a probe Mie particle in an evanescent field. This allows the observation of ‘impossible’ properties of light and of a fundamental field-theory quantity, which was previously considered as ‘virtual’"
The evanescent optical waves unlock the spin of light for the Surface Plasmon Polariton. These waves convert the force inherent is the spin of light into a linear force that is identical to the force of gravity. This force is described by the "Belinfante–Rosenfeld stress–energy tensor"
https://en.wikipedia.org/wiki/…ess%E2%80%93energy_tensor
Belinfante–Rosenfeld stress–energy tensor
The curious combination of spin-current components required to make Belinfante tensor symmetric and yet still conserved seems totally ad hoc, but it was shown by both Rosenfeld and Belinfante that the modified tensor is precisely the symmetric Hilbert energy–momentum tensor that acts as the source of gravity in general relativity. Just as it is the sum of the bound and free currents that acts as a source of the magnetic field, it is the sum of the bound and free energy–momentum that acts as a source of gravity.