Unique Root Approach : A Working Alternative to String / M-Theory with some Applications

Since nearly half a century physicists try developing a comprehensive theory unifying particle and gravity physics. All approaches however get stuck in a quagmire of problems and are unable to achieve solid results. It is time to start with a different strategy. Unique Root approach pursues a n ew course to unification. It is based on an isomorphism between internal and external (spacetime) symmetry groups. It results in two groups with SO(6) and SU(4) symmetries as basis for the universe. These symmetries allow formulating physics in a timeless six dimensional space with a Lagrangian describing interaction between four entities. Physics found there also holds for our four dimensional universe, a subspace of the complex expansion of the six dimensional one.