Einstein tried to unite the field theories of Maxwell with relativity to explain the existence of everything - a unified theory; this concept - that EM is a unifying force - has been abandoned by the mainstream, since there is far more evidence that EM is derived from another unifying force, that we know also explains neutrons and the existence of protons and electrons. Something Einstein overlooked, for some reason.
QM has succeeded, where the search for an explanation based on Maxwellian electric and magnetic fields being the fundamental underlying mechanism, has not succeeded.
Except SU(5) is a gauge theory; unifying it with gravity means either a gauge theory of gravitational interaction is needed, or another formulation of some kind.
Not sure what "SU(5) is experimentally excluded" means exactly, but that's why string theories and higher-order groups with 10 dimensions are around now.
(Edit: I might know what it means: "the SU(5) energy scale is beyond our technology", I presume)
QM has succeeded, where the search for an explanation based on Maxwellian electric and magnetic fields being the fundamental underlying mechanism, has not succeeded.
Except SU(5) is a gauge theory; unifying it with gravity means either a gauge theory of gravitational interaction is needed, or another formulation of some kind.
Not sure what "SU(5) is experimentally excluded" means exactly, but that's why string theories and higher-order groups with 10 dimensions are around now.
(Edit: I might know what it means: "the SU(5) energy scale is beyond our technology", I presume)
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