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Cosmic Polarization Rotation: testing the foundations of General Relativity

Sperello Di Serego Alighieri
Observatorio Astrofisico di Arcetri - Firenze

Abstract

An important reason for searching for Cosmic Polarization Rotation
(CPR), i.e. a rotation in vacuum of the plane of polarization for radiation
travelling across a large fraction of the universe, is that it provides a
test for the Einstein equivalence principle (EEP). 
Therefore, a null CPR would increase our confidence on General Relativity
which is based on the EEP. I shall review recent constraints on the CPR,
including those from Planck, which are all consistent with a null CPR, and
discuss future prospects for improving the constraints or detecting CPR.

2017 April 28, 15:00

IA/U.Lisboa
Observatůrio Astronůmico de Lisboa (Seminar room)
Tapada da Ajuda, 1349-018 Lisboa

Instituto de Astrof√≠sica e Ci√™ncias do Espa√ßo Universidade do Porto Faculdade de Ciências da Universidade de Lisboa Funda√ß√£o para a Ci√™ncia e a Tecnologia
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