Evolution of Metric Perturbations in Quintom Bounce model
Yi-Fu Cai, Xinmin Zhang
TL;DR
This paper investigates the behavior of metric perturbations in a bouncing universe model driven by Quintom matter, analyzing scalar, tensor, and non-Gaussian features to understand early universe dynamics.
Contribution
It provides a comprehensive analysis of metric perturbations, including non-Gaussianity and tensor modes, within the Quintom Bounce cosmological model.
Findings
Power spectrum of scalar perturbations characterized.
Non-Gaussianity of curvature perturbations analyzed.
Tensor perturbations calculated for the model.
Abstract
We in the paper study the metric perturbations generated in a bouncing universe driven by the Quintom matter. Firstly, we review the background evolution of Quintom Bounce and the power spectrum of scalar perturbations. Secondly, we study the non-Gaussianity of curvature perturbations and then calculate the tensor perturbations of the model.
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