Fetching the paper…

Reading the bibliography…

Heavy fields, reduced speeds of sound and decoupling during inflation · Around

2012

Heavy fields, reduced speeds of sound and decoupling during inflation

Achucarro, Ana, Atal, Vicente, Cespedes, Sebastian et al.

Original
PDF
Post on X

Understand

We discuss and clarify the validity of effective single field theories of inflation obtained by integrating out heavy degrees of freedom in the regime where adiabatic perturbations propagate with a suppressed speed of sound.

We show by construction that it is indeed possible to have inflationary backgrounds where the speed of sound remains suppressed and slow-roll persists for long enough.
In this class of models, heavy fields influence the evolution of adiabatic modes in a manner that is consistent with decoupling of physical low and high energy degrees of freedom.
We emphasize the distinction between the effective masses of the isocurvature modes and the eigenfrequencies of the propagating high energy modes.

Built on

C. Gordon, D. Wands, B. A. Bassett and R. Maartens, Phys. Rev. D 63
2002
Earlier work this paper cites.
S. Weinberg, Phys. Rev. D 77
Original
2003
Earlier work this paper cites.
For an early discussion see C. P. Burgess, J. M. Cline, F. Lemieux and R. Holman, JHEP 0302
2004
Earlier work this paper cites.
C. Cheung, P. Creminelli, A. L. Fitzpatrick, J. Kaplan and L. Senatore, JHEP 0803
Original
2008
Earlier work this paper cites.

Similar

A. J. Tolley and M. Wyman, Phys. Rev. D 81
Original
2010
Cited alongside, same era.
X. Chen and Y. Wang, Phys. Rev. D 81
Original
2010
Cited alongside, same era.
A. Achucarro, J. -O. Gong, S. Hardeman, G. A. Palma and S. P. Patil, Phys. Rev. D 84
Original
2011
Cited alongside, same era.
A. Achucarro, J. -O. Gong, S. Hardeman, G. A. Palma and S. P. Patil, JCAP 1101
Original
2011
Cited alongside, same era.
S. Cespedes, V. Atal and G. A. Palma, arXiv:1201.4848 [hep-th]
Original
Cited in the paper.
A. Achucarro, J. -O. Gong, S. Hardeman, G. A. Palma and S. P. Patil, arXiv:1201.6342 [hep-th]
Original
Cited in the paper.
A. Achucarro, C. P. Burgess, M. Horbatsch, J. -O. Gong, G. A. Palma, S. P. Patil, in preparation
Cited in the paper.
X. Chen and Y. Wang, arXiv:1205.0160 [hep-th] ; S. Pi and M. Sasaki, arXiv:1205.0161 [hep-th]
Original
Cited in the paper.
A. Achucarro, J. -O. Gong, G. A. Palma and S. P. Patil, in preparation
Cited in the paper.

Then

S. Cremonini, Z. Lalak and K. Turzynski, Phys. Rev. D 82
Original
2011
Later among the works it cites.
E. Komatsu et al
Original
2011
Later among the works it cites.
D. Baumann and D. Green, JCAP 1109
Original
2011
Later among the works it cites.

Beyond the bibliography

alphaXiv searches the wider corpus for related work and actual follow-ups.

Open on alphaXiv

alphaXiv is searching for related work…