Gravitational lensing as a contaminant of the gravity wave signal in the CMB
Gravitational lensing as a contaminant of the gravity wave signal in the CMB
Gravity waves (GWs) in the early Universe generate B-type polarization in the cosmic microwave background (CMB), which can be used as a direct way to measure the energy scale of inflation. Gravitational lensing contaminates the GW signal by converting the dominant E polarization into B polarization. By reconstructing the lensing …