CMB-S4 Science Book, First Edition

TL;DR

The CMB-S4 Science Book outlines a next-generation cosmic microwave background experiment designed to significantly enhance our understanding of fundamental cosmological phenomena, including primordial gravitational waves, neutrino properties, dark energy, and general relativity.

Contribution

It presents the scientific goals and experimental design for CMB-S4, a new ground-based telescope array with superconducting cameras at multiple sites to achieve groundbreaking cosmological measurements.

Findings

Plans for a large-scale CMB experiment with multiple sites.

Expected to detect B-mode polarization of primordial gravitational waves.

Will improve constraints on neutrino masses and dark energy properties.

Abstract

This book lays out the scientific goals to be addressed by the next-generation ground-based cosmic microwave background experiment, CMB-S4, envisioned to consist of dedicated telescopes at the South Pole, the high Chilean Atacama plateau and possibly a northern hemisphere site, all equipped with new superconducting cameras. CMB-S4 will dramatically advance cosmological studies by crossing critical thresholds in the search for the B-mode polarization signature of primordial gravitational waves, in the determination of the number and masses of the neutrinos, in the search for evidence of new light relics, in constraining the nature of dark energy, and in testing general relativity on large scales.