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Signature of Gravity Waves in the Polarization of the Microwave Background
Open accessAbstract
Using spin-weighted decomposition of polarization in the cosmic microwave background (CMB) we show that a particular combination of Stokes $Q$ and $U$ parameters vanishes for primordial fluctuations generated by scalar modes, but does not for those generated by primordial gravity waves. Because of this gravity wave detection is not limited by cosmic variance as in the case of temperature fluctuations. We present the exact expressions for various polarization power spectra, which are valid on any scale. Numerical evaluation in inflation-based models shows that the expected signal is of the order of 0.5 $\ensuremath{\mu}$K, which could be directly tested in future CMB experiments.
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Cited by
SEVEN-YEAR WILKINSON MICROWAVE ANISOTROPY PROBE(WMAP) OBSERVATIONS: COSMOLOGICAL INTERPRETATION
Komatsu, E., Smith, K. M., Dunkley, J., Bennett, C. L., Gold, B., Hinshaw, G., Jarosik, N., Larson, D., Nolta, M. R., Page, L., et al. (2011) · The Astrophysical Journal Supplement Series · doi:10.1088/0067-0049/192/2/18 · Cited by 8,802
FIVE-YEAR WILKINSON MICROWAVE ANISOTROPY PROBE OBSERVATIONS: COSMOLOGICAL INTERPRETATION
Komatsu, E., Dunkley, J., Nolta, M. R., Bennett, C. L., Gold, B., Hinshaw, G., Jarosik, N., Larson, D., Limon, M., Page, L., et al. (2009) · The Astrophysical Journal Supplement Series · doi:10.1088/0067-0049/180/2/330 · Cited by 5,786
Lewis, A., Challinor, A., & Lasenby, A. (2000) · The Astrophysical Journal · doi:10.1086/309179 · Cited by 4,920
Ade, P. A. R., Ahmed, Z., Amiri, M., Barkats, D., Thakur, R. B., Bischoff, C. A., Beck, D., Bock, J. J., Boenish, H., Bullock, E., et al. (2021) · Physical Review Letters · doi:10.1103/physrevlett.127.151301 · Cited by 1,014
Joint Analysis of BICEP2/ Keck Array and Planck Data
Ade, P. A. R., Aghanim, N., Ahmed, Z., Aikin, R. W., Alexander, K. D., Arnaud, M., Aumont, J., Baccigalupi, C., Banday, A. J., Barkats, D., et al. (2015) · Physical Review Letters · doi:10.1103/physrevlett.114.101301 · Cited by 1,013
Metadata
- Authors
- Seljak, U., & Zaldarriaga, M.
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 1997-03-17
- Volume
- 78
- Issue
- 11
- Pages
- 2054-2057
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W2016888141
- Cited by
- 978
- References
- 0
- FWCI
- 15.46
- Type
- journal article
- Language
- en
- Open access
- green
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- Seljak, U., & Zaldarriaga, M. (1997). Signature of Gravity Waves in the Polarization of the Microwave Background. Physical Review Letters. https://doi.org/10.1103/physrevlett.78.2054
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