English

New Integrable Chiral Cosmological Models with Two Scalar Fields

General Relativity and Quantum Cosmology 2024-11-18 v3 Cosmology and Nongalactic Astrophysics Mathematical Physics math.MP

Abstract

We construct integrable chiral cosmological models with two scalar fields and potentials represented in terms of hyperbolic functions. Using the conformal transformation of the metric and the corresponding models with induced gravity terms, we obtain the general solutions in the spatially flat, open and closed Friedmann universes and the corresponding integrals of motion. The obtained general solutions can be written in terms of the Jacobi elliptic functions of the conformal time.

Keywords

Cite

@article{arxiv.2407.12732,
  title  = {New Integrable Chiral Cosmological Models with Two Scalar Fields},
  author = {Vsevolod R. Ivanov and Sergey Yu. Vernov},
  journal= {arXiv preprint arXiv:2407.12732},
  year   = {2024}
}

Comments

21 pages, v3: typos corrected, to appear in Phys. Rev. D

R2 v1 2026-06-28T17:44:43.367Z