A note on a mimetic scalar-tensor cosmological model
Yevgeniya Rabochaya, Sergio Zerbini
TL;DR
This paper explores a specific mimetic scalar-tensor cosmological model within FLWR spacetime, deriving exact solutions for inflation, bounces, and singularities, highlighting its similarities to simpler mimetic matter models.
Contribution
It introduces a particular Horndeski mimetic model with a Lagrangian multiplier and provides exact solutions for various cosmological scenarios.
Findings
Model equations resemble simpler mimetic matter models
Exact solutions for inflation, bounces, and singularities
Insights into the behavior of mimetic scalar-tensor cosmologies
Abstract
A specific Horndeski scalar-gravity mimetic model is investigated within a FLWR space-time. The mimetic scalar field is implemented via a Lagrangian multiplier, and it is shown that the model has equations of motion formally similar to the original simpler mimetic matter model of Chamseddine-Mukhanov-Vikman. Several exact solutions describing inflation, bounces, future time singularities are presented and discussed.
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