Freund – Nambu cosmology with the massless scalar field
https://doi.org/10.29235/1561-2430-2024-60-1-43-51
Abstract
Within the framework of the generalization of Freund – Nambu scalar-tensor theory of gravity, a massless scalar field is considered, the source of which is the trace of its own energy-momentum tensor. For the cosmological problem, numerical solutions of field equations were obtained, with the help of which the dependencies of the Hubble parameter and the photometric distance to the observed sources on red-shift were constructed. To the consistency of the models with observational data, contours of confidence intervals for model parameters were constructed.
Keywords
scalar field,
scalar-tensor theory of gravity,
the cosmological problem,
Hubble parameter,
red shift,
confidence interval
Supporting agencies: The work was supported by grants no. Ф22МЦ-005 and no. Ф22М-052 of the Belarusian Republican Foundation for Fundamental Research
About the Authors
I. G. Dudko
B. I. Stepanov Institute of Physics of the National Academy of Science of Belarus
Belarus
Belarus
Igor G. Dudko – Researcher
68-2, Nezavisimosti Ave., 220072, Minsk
Yu. P. Vyblyi
B. I. Stepanov Institute of Physics of the National Academy of Science of Belarus
Belarus
Belarus
Yuri P. Vyblyi – Ph. D. (Physics and Mathematics), Leading Researcher
68-2, Nezavisimosti Ave., 220072, Minsk
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