# BB mode spectrum of CMB and Inflation

## TL;DR

This paper investigates the quantum effects on the B-mode polarization spectrum of the CMB across various inflation models, using joint observational data, and finds that these effects are more significant in models with higher tensor-to-scalar ratios.

## Contribution

It provides a detailed analysis of quantum effects on the CMB B-mode spectrum for multiple inflation models using recent observational data, highlighting conditions where quantum effects are prominent.

## Key findings

- Quantum effects are more prominent in models with larger tensor-to-scalar ratios.
- Current data do not exclude either single or multi-field slow-roll inflation models.
- Quantum effects vary with tensor spectral index values.

## Abstract

Quantum effect on the BB-mode correlation spectrum of Cosmic Microwave Background for several inflation models is studied with the BICEP2/Keck Array and Planck joint data. The results do not rule out either single or multi field models of slow-roll inflation. The quantum effect is found more prominent for the inflation models with larger values of tensor-to-scalar ratio and smaller values of tensor spectral index.