CMB Tensor Anisotropies in Metric f(R) Gravity

TL;DR

This paper investigates how tensor perturbations in f(R) gravity theories influence CMB anisotropies, providing computational results for specific models using a modified CAMB code.

Contribution

It introduces a framework for calculating CMB tensor anisotropies in f(R) gravity and implements it for the case of f(R)=R^n using a modified CAMB.

Findings

Computed temperature power spectrum for f(R)=R^n

Demonstrated the impact of tensor perturbations in f(R) models

Provided a computational tool for future studies

Abstract

We present a description of CMB anisotropies generated by tensor perturbations in f(R) theories of gravity. The temperature power spectrum in the special case of $f(R)=R^n$ is computed using a modified version of CAMB package.