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May 21 – 23, 2024
IP2I Lyon
Europe/Paris timezone

B-mode generation of CMB in the Standard Model Extension

May 22, 2024, 5:50 PM
IP2I Lyon

IP2I Lyon


Iman Motie


"According to standard cosmology, near the last scattering surface, the CMB photons scattered via Compton scattering predict that cosmological scalar perturbations at linear order
are not able to source B polarization modes. In this work, we investigate the possibility that such CMB polarization modes
are generated even in the presence of linear scalar perturbations by considering the Lorentz-violating operators in the Standard Model
Extension (SME). Our
results provide a useful tool to constrain new physics using CMB data."

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