Video URL
https://pirsa.org/20090014CMB lensing and new constraints on the early universe
APA
Sherwin, B. (2020). CMB lensing and new constraints on the early universe. Perimeter Institute for Theoretical Physics. https://pirsa.org/20090014
MLA
Sherwin, Blake. CMB lensing and new constraints on the early universe. Perimeter Institute for Theoretical Physics, Sep. 15, 2020, https://pirsa.org/20090014
BibTex
@misc{ scivideos_PIRSA:20090014, doi = {10.48660/20090014}, url = {https://pirsa.org/20090014}, author = {Sherwin, Blake}, keywords = {Cosmology}, language = {en}, title = {CMB lensing and new constraints on the early universe}, publisher = {Perimeter Institute for Theoretical Physics}, year = {2020}, month = {sep}, note = {PIRSA:20090014 see, \url{https://scivideos.org/index.php/pirsa/20090014}} }
Blake Sherwin Princeton University
Abstract
Measurements of gravitational lensing in the cosmic microwave background (CMB) allow the dark matter distribution to be mapped out to uniquely high redshifts. After giving a brief overview of current and upcoming CMB lensing measurements, I will focus on two new ways of using CMB lensing, in combination with galaxy surveys, to constrain the early universe. First, I will explore how CMB lensing and galaxy surveys could provide insights into current discrepancies in measurements of the Hubble constant. Second, I will explain why new approaches to de-lensing – removing the lensing effect to reveal the primordial polarization sky – will be important for probing the early universe with the Simons Observatory CMB experiment.