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Cosmic Microwave Backgrround (CMB) experiments have contributed powerful constraints on the fundamental physics of the Universe. Upcoming CMB experiments such as the Simons Observatory and CMB-S4 are poised to extend this progress even further. However, CMB experiments still have a wealth of information to offer beyond near-term facilities regarding the properties of dark matter, inflation, and light relic particles. In particular, a much lower-noise and higher-resolution wide-area CMB survey can cross a number of critical fundamental physics thresholds and open a relatively untapped window of small-scale, late-time CMB anisotropies. Here I will discuss CMB-HD, a next-generation CMB facility with three times lower noise and six times higher resolution than the CMB-S4 wide-area survey, as well as the discoveries it can enable.
Zoom link: https://bnl.zoomgov.com/j/1605020278?pwd=cHJ1bDRuK1FDNnZLSnpxVkZhcDQ3QT09
Raju Venugopalan