Built on

E. Dudas, N. Kitazawa and A. Sagnotti, Phys. Lett. B 694
Original
1910
Earlier work this paper cites.
A. Gruppuso, F. Finelli, P. Natoli, F. Paci, P. Cabella, A. De Rosa and N. Mandolesi, Mon. Not. Roy. Astron. Soc. 411
Original
1979
Earlier work this paper cites.
V. F. Mukhanov and G. V. Chibisov, JETP Lett. 33
1981
Earlier work this paper cites.
G. Hinshaw, A. J. Banday, C. L. Bennett, K. M. Gorski, A. Kogut, C. H. Lineweaver, G. F. Smoot and E. L. Wright, Astrophys. J. 464
1996
Earlier work this paper cites.
A. Sagnotti, in Cargese ’87, “Non-Perturbative Quantum Field Theory”, eds. G. Mack et al (Pergamon Press, 1988), p. 521, arXiv:hep-th/0208020; G. Pradisi and A. Sagnotti, Phys. Lett. B 216
2000
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S. Sugimoto, Prog. Theor. Phys. 102
2000
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A. Lewis, A. Challinor and A. Lasenby, Astrophys. J. 538
2000
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M. Tegmark and A. de Oliveira-Costa, Phys. Rev. D 64
2001
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A. Lewis and S. Bridle, Phys. Rev. D 66
2002
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D. N. Spergel et al
2003
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H. K. Eriksen et al
2004
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K. M. Gorski, E. Hivon, A. J. Banday, B. D. Wandelt, F. K. Hansen, M. Reinecke and M. Bartelman, Astrophys. J. 622
2005
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C. Copi, D. Huterer, D. Schwarz and G. Starkman, Phys. Rev. D 75
2007
Earlier work this paper cites.
For reviews see: M. B. Green, J. H. Schwarz and E. Witten, “Superstring Theory”, 2 vols., Cambridge, UK: Cambridge Univ. Press (1987); J. Polchinski, “String theory”, 2 vols. Cambridge, UK: Cambridge Univ. Press (1998); C. V. Johnson, “D-branes,” USA: Cambridge Univ. Press (2003); B. Zwiebach, “A first course in string theory” Cambridge, UK: Cambridge Univ. Press (2004); K. Becker, M. Becker and J. H. Schwarz, “String theory and M-theory: A modern introduction” Cambridge, UK: Cambridge Univ. Press (2007); E. Kiritsis, “String theory in a nutshell”, Princeton, NJ: Princeton Univ. Press (2007)
2007
Earlier work this paper cites.
C. Monteserin, R. B. B. Barreiro, P. Vielva, E. Martinez-Gonzalez, M. P. Hobson and A. N. Lasenby, Mon. Not. Roy. Astron. Soc. 387
Original
2008
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A. A. Starobinsky, Phys. Lett. B 91
2008
Earlier work this paper cites.

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2017

The Evens and Odds of CMB Anomalies

Gruppuso, A., Kitazawa, N., Lattanzi, M. et al.

Understand

The lack of power of large--angle CMB anisotropies is known to increase its statistical significance at higher Galactic latitudes, where a string--inspired pre--inflationary scale $\Delta$ can also be detected.

Considering the Planck 2015 data, and relying largely on a Bayesian approach, we show that the effect is mostly driven by the \emph{even}--$\ell$ harmonic multipoles with $\ell \lesssim 20$, which appear sizably suppressed in a way that is robust with respect to Galactic masking, along with the corresponding detections of $\Delta$.
On the other hand, the first \emph{odd}--$\ell$ multipoles are only suppressed at high Galactic latitudes.
We investigate this behavior in different sky masks, constraining $\Delta$ through even and odd multipoles, and we elaborate on possible implications.

Built on

E. Dudas, N. Kitazawa and A. Sagnotti, Phys. Lett. B 694
Original
1910
Earlier work this paper cites.
A. Gruppuso, F. Finelli, P. Natoli, F. Paci, P. Cabella, A. De Rosa and N. Mandolesi, Mon. Not. Roy. Astron. Soc. 411
Original
1979
Earlier work this paper cites.
V. F. Mukhanov and G. V. Chibisov, JETP Lett. 33
1981
Earlier work this paper cites.
G. Hinshaw, A. J. Banday, C. L. Bennett, K. M. Gorski, A. Kogut, C. H. Lineweaver, G. F. Smoot and E. L. Wright, Astrophys. J. 464
1996
Earlier work this paper cites.
A. Sagnotti, in Cargese ’87, “Non-Perturbative Quantum Field Theory”, eds. G. Mack et al (Pergamon Press, 1988), p. 521, arXiv:hep-th/0208020; G. Pradisi and A. Sagnotti, Phys. Lett. B 216
2000
Earlier work this paper cites.
S. Sugimoto, Prog. Theor. Phys. 102
2000
Earlier work this paper cites.
A. Lewis, A. Challinor and A. Lasenby, Astrophys. J. 538
2000
Earlier work this paper cites.
M. Tegmark and A. de Oliveira-Costa, Phys. Rev. D 64
2001
Earlier work this paper cites.
A. Lewis and S. Bridle, Phys. Rev. D 66
2002
Earlier work this paper cites.
D. N. Spergel et al
2003
Earlier work this paper cites.
H. K. Eriksen et al
2004
Earlier work this paper cites.
K. M. Gorski, E. Hivon, A. J. Banday, B. D. Wandelt, F. K. Hansen, M. Reinecke and M. Bartelman, Astrophys. J. 622
2005
Earlier work this paper cites.
C. Copi, D. Huterer, D. Schwarz and G. Starkman, Phys. Rev. D 75
2007
Earlier work this paper cites.
For reviews see: M. B. Green, J. H. Schwarz and E. Witten, “Superstring Theory”, 2 vols., Cambridge, UK: Cambridge Univ. Press (1987); J. Polchinski, “String theory”, 2 vols. Cambridge, UK: Cambridge Univ. Press (1998); C. V. Johnson, “D-branes,” USA: Cambridge Univ. Press (2003); B. Zwiebach, “A first course in string theory” Cambridge, UK: Cambridge Univ. Press (2004); K. Becker, M. Becker and J. H. Schwarz, “String theory and M-theory: A modern introduction” Cambridge, UK: Cambridge Univ. Press (2007); E. Kiritsis, “String theory in a nutshell”, Princeton, NJ: Princeton Univ. Press (2007)
2007
Earlier work this paper cites.
C. Monteserin, R. B. B. Barreiro, P. Vielva, E. Martinez-Gonzalez, M. P. Hobson and A. N. Lasenby, Mon. Not. Roy. Astron. Soc. 387
Original
2008
Earlier work this paper cites.
A. A. Starobinsky, Phys. Lett. B 91
2008
Earlier work this paper cites.