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starting something, for the moment mainly to give a home to relation between 5d Maxwell theory and self-dual 3-forms in 6d – section
added a section “Relation between 5d Maxwell theory and massive vector mesons in 4d” (here) spelling out a key step in
(but not the full construction there, and also using some other assumptions, as I have highlighted in the text – maybe more later)
I am starting a subsection “Relation to massive vector mesosns in 4d – The Sakai-Sugimoto model” (here), following Sutcliffe.
So far I have added a (somewhat lengthy) proof (here) that the 5d vacuum Maxwell equations on the Sakai-Sugimoto spacetime
g≔H+1ημνdxμ⊗dxν+H−1dz⊗dzwith
H({xμ},z)≔H(z)≔(1+z2L2)2/3are equivalent to the following massive 4d wave equation:
⋆d⋆dA=0⇔ημν∂μ∂νA+H1/2∂z(H3/2∂zA)=0This statement is sort of in the references cited, but in a somewhat roundabout manner. I wanted to write out an explicit statement and proof.
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