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M. Zaldarriaga and U. Seljak, Phys. Rev. D55
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A. Lue, L.-M. Wang, and M. Kamionkowski, Phys. Rev. Lett. 83
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W. Hu, Phys. Rev. D62
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2007
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2007
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J.-Q. Xia, H. Li, X.-l. Wang, and X.-m. Zhang, Astron. Astrophys. 483
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G. Gubitosi, L. Pagano, G. Amelino-Camelia, A. Melchiorri, and A. Cooray, JCAP 0908
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M. Satoh, JCAP 1011
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V. Gluscevic and M. Kamionkowski, Phys. Rev. D81
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E. Dimastrogiovanni, N. Bartolo, S. Matarrese, and A. Riotto, Adv.Astron. 2010
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2016

Parity violation in the CMB trispectrum from the scalar sector

Shiraishi, Maresuke

Understand

Under the existence of chiral non-Gaussian sources during inflation, the trispectrum of primordial curvature perturbations can break parity.

We examine signatures of the induced trispectrum of the cosmic microwave background (CMB) anisotropies.
It is confirmed via a harmonic-space analysis that, as a consequence of parity violation, such a CMB trispectrum has nonvanishing signal in the $\ell_1 + \ell_2 + \ell_3 + \ell_4 = \text{odd}$ domain, which is prohibited in the concordance cosmology.
When the curvature trispectrum is parametrized with Legendre polynomials, the CMB signal due to the Legendre dipolar term is enhanced at the squeezed configurations in $\ell$ space, yielding a high signal-to-noise ratio.

Built on

M. Zaldarriaga and U. Seljak, Phys. Rev. D55
1997
Earlier work this paper cites.
A. Lue, L.-M. Wang, and M. Kamionkowski, Phys. Rev. Lett. 83
1999
Earlier work this paper cites.
W. Hu, Phys. Rev. D62
2000
Earlier work this paper cites.
W. Hu, Phys. Rev. D64
2001
Earlier work this paper cites.
V. Acquaviva, N. Bartolo, S. Matarrese, and A. Riotto, Nucl. Phys. B667
2003
Earlier work this paper cites.
J. M. Maldacena, JHEP 05
Original
2003
Earlier work this paper cites.
S. Alexander and J. Martin, Phys. Rev. D71
2005
Earlier work this paper cites.
D. H. Lyth, C. Quimbay, and Y. Rodriguez, JHEP 03
2005
Earlier work this paper cites.
G.-C. Liu, S. Lee, and K.-W. Ng, Phys. Rev. Lett. 97
2006
Earlier work this paper cites.
B. Feng, M. Li, J.-Q. Xia, X. Chen, and X. Zhang, Phys. Rev. Lett. 96
2006
Earlier work this paper cites.
N. Kogo and E. Komatsu, Phys. Rev. D73
2006
Earlier work this paper cites.
S. Saito, K. Ichiki, and A. Taruya, JCAP 0709
Original
2007
Earlier work this paper cites.
P. Cabella, P. Natoli, and J. Silk, Phys. Rev. D76
Original
2007
Earlier work this paper cites.
J.-Q. Xia, H. Li, X.-l. Wang, and X.-m. Zhang, Astron. Astrophys. 483
Original
2008
Earlier work this paper cites.
T. Kahniashvili, R. Durrer, and Y. Maravin, Phys. Rev. D78
Original
2008
Earlier work this paper cites.
T. Takahashi and J. Soda, Phys. Rev. Lett. 102
Original
2009
Earlier work this paper cites.
S. Alexander and N. Yunes, Phys. Rept. 480
Original
2009
Earlier work this paper cites.
G. Gubitosi, L. Pagano, G. Amelino-Camelia, A. Melchiorri, and A. Cooray, JCAP 0908
Original
2009
Earlier work this paper cites.
M. Satoh, JCAP 1011
Original
2010
Earlier work this paper cites.
V. Gluscevic and M. Kamionkowski, Phys. Rev. D81
Original
2010
Earlier work this paper cites.
E. Dimastrogiovanni, N. Bartolo, S. Matarrese, and A. Riotto, Adv.Astron. 2010
Original
2010
Earlier work this paper cites.