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T: Fachverband Teilchenphysik

T 23: Theoretische Astroteilchenphysik und Kosmologie I

T 23.10: Talk

Wednesday, March 17, 2010, 16:15–16:30, HG XV

Novel sources for B-mode polarisation — Martin Beneke, Christian Fidler, and •Klaus Klingmüller — Institut für Theoretische Physik E, RWTH Aachen U., 52056 Aachen

In the newly derived second order Boltzmann equation we identify novel sources for the gradient free component of the CMB polarisation pattern, the B-mode polarisation. We evaluate their contribution numerically and compare the result to known second order effects such as corrections due to second order terms in the Einstein equation and weak lensing.