Seminars and Colloquia

New Developments in CMB Lensing

by Prof. Ruth Durrer (University of Geneva)

Europe/Rome
Description

I shall give a brief introduction to CMB lensing. Then I shall discuss new development where lensing effects are taken into account at second and third order, including so called ’post-Born’ contributions. Especially, I shall show that beyond leading order, CMB polarisation acquires a rotation due to lensing. This result is still debated in the literature and I shall present the arguments as well as a (tentative) resolution.
 

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