New method of exponential potentials reconstruction based on given scale factor in phantonical two-field models [article]

I. V. Fomin, S. V. Chervon
We study cosmological dynamic equations of two-field phantonical models, using standard approach for constant potential in finding exact solutions. New method we proposed for reconstruction non-constant exponential potentials supporting given evolution of scale factor. The exact solutions for different types of inflation represented in explicit form. Criteria for limiting possible types of inflationary dynamics are formulated within the framework of the proposed approach. It is shown that these
more » ... models explain both stages of the accelerated expansion of the universe.
doi:10.48550/arxiv.2112.09359 fatcat:bmcq5frzargn3e66kbsuujrvse