Parity Violation Constraints Using Cosmic Microwave Background Polarization Spectra from 2006 and 2007 Observations by the QUaD Polarimeter

Edward Wu, Peter Ade, J. Bock, Melanie Bowden, M. Brown, G. Cahill, P. castro, S. Church, T. Culverhouse, K. Ganga, R. B. Friedman, Walter Gear, S. Gupta, Jamie Hinderks, J. Kovac, A. E. Lange, S. J. Melhuish, Yasin Memari, L. Piccirillo, C. PrykeN. Rajguru, B. Rusholme, Andy Taylor, M. Zemcov

Research output: Contribution to journalArticlepeer-review

Abstract

We constrain parity-violating interactions to the surface of last scattering using spectra from the QUaD experiment’s second and third seasons of observations by searching for a possible systematic rotation of the polarization directions of cosmic microwave background photons. We measure the rotation angle due to such a possible “cosmological birefringence” to be 0.55°±0.82° (random) ±0.5° (systematic) using QUaD’s 100 and 150 GHz temperature-curl and gradient-curl spectra over the spectra over the multipole range 200<ℓ<2000, consistent with null, and constrain Lorentz-violating interactions to <2×10-43GeV (68% confidence limit). This is the best constraint to date on electrodynamic parity violation on cosmological scales.
Original languageEnglish
Article number161302
Number of pages4
JournalPhysical Review Letters
Volume102
Issue number16
DOIs
Publication statusPublished - 21 Apr 2009

Keywords / Materials (for Non-textual outputs)

  • cosmology
  • CMB
  • Polarization
  • Discrete symmetries
  • Parity
  • CPT

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