Snowmass2021 Cosmic Frontier: Cosmic Microwave Background Measurements White Paper

Abstract

This is a solicited whitepaper for the Snowmass 2021 community planning exercise. The paper focuses on measurements and science with the Cosmic Microwave Background (CMB). The CMB is foundational to our understanding of modern physics and continues to be a powerful tool driving our understanding of cosmology and particle physics. In this paper, we outline the broad and unique impact of CMB science for the High Energy Cosmic Frontier in the upcoming decade. We also describe the progression of ground-based CMB experiments, which shows that the community is prepared to develop the key capabilities and facilities needed to achieve these transformative CMB measurements.

contribution to Snowmass 2021

Cited by in corpus (4)

• Detection of Early-Universe Gravitational Wave Signatures and Fundamental Physics
• Constraining the spatial curvature with cosmic expansion history in a cosmological model with a non-standard sound horizon
• Cosmic Neutrino Decoupling and its Observable Imprints: Insights from Entropic-Dual Transport
• The Simons Observatory: impact of bandpass, polarization angle and calibration uncertainties on small-scale power spectrum analysis