Abstract
We analyze two branches of five-dimensional theories from a methodological point of view: Kaluza’s theory and the Klein-Fock-Rumer (KFR) 5-optics, aimed at a geometric description of electromagnetism and masses of elementary particles, respectively. These two theories have a number of problematic points such as the Planckian masses in Kaluza’s theory, or appearing of a configuration space in the KFR scheme. We propose a simple six-dimensional toy model of Kaluza-Klein type with compactification on a two-dimensional torus \(\mathbb{T}^2\), which demonstrates a possible way to overcome these difficulties in quite a simple manner. The key features of our approach are: merging of the above two 5D theories into a unique 6D theory; using the signature (+-) of extra space allowing one to renormalize the mass spectrum; and a special kind of truncation of the full isometry group to the electromagnetic gauge group U(1). The latter feature allows a geometrical interpretation in terms of an effective 5D theory on a hypersurface \(\Sigma\subset\mathbb{T}^2\) being a leaf of a linear foliation of the 2-torus. Possible consequences and open questions arising in such a scheme are briefly discussed.
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This publication has been prepared with the support of the RUDN University Program 5-100.
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The present issue of the journal is No. 100 since it was founded in 1995.
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Vladimirov, Y.S., Bolokhov, S.V. On the Description of Masses and Charges in the 6D Theory of Kaluza-Klein Type. Gravit. Cosmol. 25, 366–373 (2019). https://doi.org/10.1134/S0202289319040133
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DOI: https://doi.org/10.1134/S0202289319040133