2012/03/22 by V. K. Shchigolev, M. P. Rotova
Earth and Planetary Sciences · Physics and Astronomy · #Cosmology and Gravitation Theories #Earth Systems and Cosmic Evolution #Relativity and Gravitational Theory #gr-qc
paper · pdf · doi:10.1142/s0217732312500861
published as Mod. Phys. Lett. A, Vol. 27, No. 17 (2012) 1250086 · 9 pages, 2 figures
arxiv created 2012/03/22 · openalex publication_date 2012/05/18 · arxiv updated 2012/05/25 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
In this paper we investigate a tachyon field model in cosmology, provided its interaction with the quintessence or phantom fields. The model takes into account this interaction beyond the usual approach, in which the interaction is phenomenologically described by the energy flow between the matter components. In our model, the interaction of tachyon field with a canonical scalar field is taken into account through the interaction potential in the total Lagrangian of the system, like in the case of two or more canonical scalar fields. We obtain the different types of exact solution for the model by employing the so-called "first order formalism" procedures.