LiteBIRD Collaboration
1. Introduction
1.2. Outline of this Review
2. CMB B Modes as Tests of Cosmic Inflation
2.1. CMB Polarization Power Spectra
2.2. Cosmic Inflation
2.3. Primordial Gravitational Waves from Cosmic Inflation
2.4. Implications of LiteBIRD Power Spectrum Measurements for Inflation
2.5. Beyond the B-mode Power Spectrum
2.6. The Need for Measurements from Space
2.7. Comparison with Other Probes
3. LiteBIRD Overview
3.1. Project Overview
3.2. Science Requirements
3.3. Measurement Requirements and System Requirements
3.4. Launch Vehicle
3.6. Service Module
3.7. Operation Concepts
3.8. Data Processing and Analyses
4. Payload Module of LiteBIRD
4.2. Low-Frequency Telescope
4.3. Mid- and High-Frequency Telescopes
4.4. Detection Chain
4.5. Readout
4.6. Electronics Architecture
4.7. Cryogenic System
4.8. Calibration
5. Statistical and Systematic Uncertainties in the Tensor-To-Scalar Ratio Measurement
5.1. Instrument Model
5.2. Foreground Cleaning
5.3. Instrumental Systematic Uncertainties
5.4. Total Uncertainties of the Tensor-to-Scalar Ratio
5.5. Enhanced Science Case
6. Scientific Outcomes of LiteBIRD Beyond Primordial Gravitational Waves
6.1. Optical Depth, Reionization of the Universe and Neutrino Masses
6.2. Cosmic Birefringence
6.3. Mapping the Hot Gas in the Universe
6.4. Anisotropic CMB Spectral Distortions
6.5. Primordial Magnetic Fields
6.6. Elucidating Spatial Anomalies with Polarization
6.7. Galactic Astrophysics
7. Potential Design Extensions and Synergies
7.2. Synergy with Other Projects
8. Conclusions