Unimodular bimode gravity, grand unification and the scalar-graviton   dark matter
  In prior article of the author, the unimodular bimode gravity/systo-gravity, with the scalar-graviton/systolon dark matter, was worked out. To compile with the anomalous rotation curves of galaxies the scale of the local scale violation in the theory was shown to be about 10^15 GeV. In this letter, to naturally incorporate such a scale the hyper unification framework, merging systo-gravity with grand unification through matter, is constructed. The systolon, as a free propagating compression mode in metric, emerges only below the unification scale, possessing at the same time a modified high-energy behavior to be manifested at the high temperatures. 
Yu. F. Pirogov
gr-qc astro-ph.CO hep-ph