“School of Physic”

Back to Papers Home
Back to Papers of School of Physic

Paper   IPM / Physic / 17995
School of Physics
  Title:   Cosmological Perturbation Theory with Trinity of Scalar Fields
  Author(s): 
1.  A. Ashoorioon
2.  Sh. Mukohyama
3.  K. Rezazadeh
4.  N. Talebizadeh
  Status:   Preprint
  Journal:
  Year:  2025
  Supported by:  IPM
  Abstract:
This paper explicitly develops the three-field cosmological perturbation theory with a flat field space. We solve the background and perturbation equations numerically for three different cases. First, to check the consistency of the three-field formalism, we investigate an effective two-field model motivated by the two-block case of the multi-giant vacua matrix Inflation model. Then we investigate a completely three-field case without any direct interaction between different fields, and finally, a three-field case containing direct interactions. The power spectra of the curvature perturbations in all cases are computed numerically, and the effects of rapid turn in the power spectrum are highlighted.

Download TeX format
back to top
scroll left or right