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B. Ratra, Astrophys. J. 391
1992
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A. Berera, Phys. Rev. Lett. 75
1995
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D. H. Lyth, Phys. Rev. Lett. 78
1997
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S. Y. Khlebnikov and I. I. Tkachev, Phys. Rev. D 56
1997
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E. Merzbacher, “Quantum mechanics,” Wiley, 3rd edition (1997), 672 p
1997
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A. Lue, L. M. Wang and M. Kamionkowski, Phys. Rev. Lett. 83
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D. J. H. Chung, E. W. Kolb, A. Riotto and I. I. Tkachev, Phys. Rev. D 62
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C. Caprini, R. Durrer and T. Kahniashvili, Phys. Rev. D 69
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D. H. Lyth, C. Quimbay and Y. Rodriguez, JHEP 0503
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R. Easther and E. A. Lim, JCAP 0604
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M. M. Anber and L. Sorbo, JCAP 0610
2006
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J. Garcia-Bellido and D. G. Figueroa, Phys. Rev. Lett. 98
2007
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J. F. Dufaux, A. Bergman, G. N. Felder, L. Kofman and J. P. Uzan, Phys. Rev. D 76
Original
2007
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S. Saito, K. Ichiki and A. Taruya, JCAP 0709
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2007
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A. P. S. Yadav, E. Komatsu and B. D. Wandelt, Astrophys. J. 664
2007
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A. P. S. Yadav, E. Komatsu, B. D. Wandelt, M. Liguori, F. K. Hansen and S. Matarrese, Astrophys. J. 678
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2008
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J. F. Dufaux, G. Felder, L. Kofman and O. Navros, JCAP 0903
Original
2009
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J. F. Dufaux, Phys. Rev. Lett. 103
Original
2009
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M. Bastero-Gil and A. Berera, Int. J. Mod. Phys. A 24
Original
2009
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J. F. Dufaux, D. G. Figueroa and J. Garcia-Bellido, Phys. Rev. D 82
Original
2010
Earlier work this paper cites.

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2011
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M. Shiraishi, JCAP 1311
Original
2013
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M. Shiraishi, A. Ricciardone and S. Saga, JCAP 1311
Original
2013
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J. L. Cook and L. Sorbo, JCAP 1311
Original
2013
Later among the works it cites.
L. Senatore, E. Silverstein and M. Zaldarriaga, JCAP 1408
Original
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A. Ferté and J. Grain, Phys. Rev. D 89
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2015

Scale-dependent gravitational waves from a rolling axion

Namba, Ryo, Peloso, Marco, Shiraishi, Maresuke et al.

Understand

We consider a model in which a pseudo-scalar field $\sigma$ rolls for some e-folds during inflation, sourcing one helicity of a gauge field.

These fields are only gravitationally coupled to the inflaton, and therefore produce scalar and tensor primordial perturbations only through gravitational interactions.
These sourced signals are localized on modes that exit the horizon while the roll of $\sigma$ is significant.
We focus our study on cases in which the model can simultaneously produce (i) a large gravitational wave signal, resulting in observable B-modes of the CMB polarizations, and (ii) sufficiently small scalar perturbations, so to be in agreement with the current limits from temperature anisotropies.

Built on

B. Ratra, Astrophys. J. 391
1992
Earlier work this paper cites.
A. Berera, Phys. Rev. Lett. 75
1995
Earlier work this paper cites.
D. H. Lyth, Phys. Rev. Lett. 78
1997
Earlier work this paper cites.
S. Y. Khlebnikov and I. I. Tkachev, Phys. Rev. D 56
1997
Earlier work this paper cites.
E. Merzbacher, “Quantum mechanics,” Wiley, 3rd edition (1997), 672 p
1997
Earlier work this paper cites.
A. Lue, L. M. Wang and M. Kamionkowski, Phys. Rev. Lett. 83
1999
Earlier work this paper cites.
D. J. H. Chung, E. W. Kolb, A. Riotto and I. I. Tkachev, Phys. Rev. D 62
2000
Earlier work this paper cites.
C. Caprini, R. Durrer and T. Kahniashvili, Phys. Rev. D 69
2004
Earlier work this paper cites.
D. Babich and M. Zaldarriaga, Phys. Rev. D 70
2004
Earlier work this paper cites.
D. H. Lyth, C. Quimbay and Y. Rodriguez, JHEP 0503
2005
Earlier work this paper cites.
R. Easther and E. A. Lim, JCAP 0604
2006
Earlier work this paper cites.
M. M. Anber and L. Sorbo, JCAP 0610
2006
Earlier work this paper cites.
J. Garcia-Bellido and D. G. Figueroa, Phys. Rev. Lett. 98
2007
Earlier work this paper cites.
J. F. Dufaux, A. Bergman, G. N. Felder, L. Kofman and J. P. Uzan, Phys. Rev. D 76
Original
2007
Earlier work this paper cites.
S. Saito, K. Ichiki and A. Taruya, JCAP 0709
Original
2007
Earlier work this paper cites.
A. P. S. Yadav, E. Komatsu and B. D. Wandelt, Astrophys. J. 664
2007
Earlier work this paper cites.
A. P. S. Yadav, E. Komatsu, B. D. Wandelt, M. Liguori, F. K. Hansen and S. Matarrese, Astrophys. J. 678
Original
2008
Earlier work this paper cites.
J. F. Dufaux, G. Felder, L. Kofman and O. Navros, JCAP 0903
Original
2009
Earlier work this paper cites.
J. F. Dufaux, Phys. Rev. Lett. 103
Original
2009
Earlier work this paper cites.
M. Bastero-Gil and A. Berera, Int. J. Mod. Phys. A 24
Original
2009
Earlier work this paper cites.
J. F. Dufaux, D. G. Figueroa and J. Garcia-Bellido, Phys. Rev. D 82
Original
2010
Earlier work this paper cites.