Abstract
The evolution of properties and interactions of elementary particles is described, beginning with the Planck scale of 1019 GeV. The description is based on the hypothesis that the high-temperature (high-energy) limit of the Standard Model is generated by the gauge group contraction. In the infinite-temperature limit, properties of particles fundamentally change: all particles lose their masses, and only massless neutral \(Z\) bosons and \(u\) quarks together with neutrinos and photons survive. Weak interactions become long-range ones and are generated by neutral currents. Quarks have only one color degree of freedom.
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Translated by M. Potapov
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Gromov, N.A. High-Energy Standard Model from the Gauge Group Contraction. Phys. Part. Nuclei 51, 540–544 (2020). https://doi.org/10.1134/S1063779620040310
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DOI: https://doi.org/10.1134/S1063779620040310