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to include extra dimensions in an generally accepted form,

or is it still under investigation?

I've already read

http://arxiv.org/pdf/hep-ph/0609260v4

but I didn't quite like the add-hoc assertion

*We assert that in all the traditional (3 + 1) D curl operations and cross products in*

physics [...] one of the vectors involved is actually an antisymmetric second rank tensor.

physics [...] one of the vectors involved is actually an antisymmetric second rank tensor.

Moreover, even we accept the above assertion, the resulting equations loose the aesthetic symmetry of classical Maxwell equations, a fact that in physics is always a warning message of something wrong.

Furthermore the following article

http://arxiv.org/pdf/hep-ph/0106235v2

makes things even more confusing as it states that Feynman derived the first set of Maxwell (relativistic) equations starting from the non relativistic Newton's second law!

Since I am a Physician only by hobby (my real occupation is Electrical Engineer) I can not totally follow the advanced mathematical/physics concepts in the relative articles I am asking your help for clarifying these things.