Built on

O. Gould, J. Kozaczuk, L. Niemi, M. J. Ramsey-Musolf, T. V. I. Tenkanen and D. J. Weir, “Nonperturbative analysis of the gravitational waves from a first-order electroweak phase transition,” Phys. Rev. D
Original
1903
Earlier work this paper cites.
P. S. B. Dev, F. Ferrer, Y. Zhang and Y. Zhang, “Gravitational Waves from First-Order Phase Transition in a Simple Axion-Like Particle Model,” JCAP
Original
1905
Earlier work this paper cites.
A. Salvio, “Quasi-Conformal Models and the Early Universe,” Eur. Phys. J. C
Original
1907
Earlier work this paper cites.
J. J. Bennett, G. Buldgen, M. Drewes and Y. Y. Y. Wong, “Towards a precision calculation of the effective number of neutrinos
Original
1911
Earlier work this paper cites.
R. Utiyama and B. S. DeWitt, “Renormalization of a classical gravitational field interacting with quantized matter fields,” J. Math. Phys
1962
Earlier work this paper cites.
A. A. Starobinsky, “A New Type of Isotropic Cosmological Models Without Singularity,” Phys. Lett. B
1980
Earlier work this paper cites.
K. Kajantie, K. Rummukainen and M. E. Shaposhnikov, “A Lattice Monte Carlo study of the hot electroweak phase transition,” Nucl. Phys. B
1993
Earlier work this paper cites.
K. Freese, J. A. Frieman and A. V. Olinto, “Natural inflation with pseudo - Nambu-Goldstone bosons,” Phys. Rev. Lett
1993
Earlier work this paper cites.
K. Kajantie, M. Laine, K. Rummukainen and M. E. Shaposhnikov, “The Electroweak phase transition: A Nonperturbative analysis,” Nucl. Phys. B
1996
Earlier work this paper cites.
K. Kajantie, M. Laine, K. Rummukainen and M. E. Shaposhnikov, “Is there a hot electroweak phase transition at
1996
Earlier work this paper cites.
M. Sasaki and E. D. Stewart, “A General analytic formula for the spectral index of the density perturbations produced during inflation,” Prog. Theor. Phys
1996
Earlier work this paper cites.
A. Vilenkin and E. P. S. Shellard, “Cosmic Strings and Other Topological Defects,” Cambridge University Press, 2000, ISBN 978-0-521-65476-0
2000
Earlier work this paper cites.
C. Gordon, D. Wands, B. A. Bassett and R. Maartens, “Adiabatic and entropy perturbations from inflation,” Phys. Rev. D
2000
Earlier work this paper cites.
R. Z. Ferreira, A. Notari and G. Simeon, “Natural Inflation with a periodic non-minimal coupling,” JCAP
Original
2002
Earlier work this paper cites.
A. R. Liddle and S. M. Leach, “How long before the end of inflation were observable perturbations produced?,” Phys. Rev. D
2003
Earlier work this paper cites.
J. Crowder and N. J. Cornish, “Beyond LISA: Exploring future GW missions,” Phys. Rev. D
2005
Earlier work this paper cites.
K. Akita and M. Yamaguchi, “A precision calculation of relic neutrino decoupling,” JCAP
Original
2005
Earlier work this paper cites.
S. Kawamura
Original
2006
Earlier work this paper cites.
G. Harry, P. Fritschel, D. Shaddock, W. Folkner and E. Phinney, “Laser interferometry for the big bang observer,” Class. Quant. Grav
2006
Earlier work this paper cites.

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Then

B. P. Abbott
Original
2017
Later among the works it cites.
P. A. R. Ade
Original
2018
Later among the works it cites.
A. Salvio and A. Strumia, “Agravity up to infinite energy,” Eur. Phys. J. C
Original
2018
Later among the works it cites.
M. Maggiore, “Gravitational Waves. Vol. 2: Astrophysics and Cosmology,” Oxford University Press, 3, 2018
2018
Later among the works it cites.
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Original
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Later among the works it cites.

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2023

(Multi-field) Natural Inflation and Gravitational Waves

Salvio, Alberto, Sciusco, Simone

Understand

We provide a detailed study of natural inflation with a periodic non-minimal coupling, which is a well-motivated inflationary model that admits an explicit UV completion.

We demonstrate that this construction can satisfy the most recent observational constraints from Planck and the BICEP/Keck collaborations.
We also compute the corresponding relic gravitational wave background due to tensor perturbations and show that future space-borne interferometers, such as DECIGO, BBO and ALIA, may be able to detect it.
Next, we extend this analysis and establish the validity of these results in a multi-field model featuring an additional $R^2$ term in the action, which allows us to interpolate between natural and scalaron (a.k.a.~Starobinsky) inflation.

Built on

O. Gould, J. Kozaczuk, L. Niemi, M. J. Ramsey-Musolf, T. V. I. Tenkanen and D. J. Weir, “Nonperturbative analysis of the gravitational waves from a first-order electroweak phase transition,” Phys. Rev. D
Original
1903
Earlier work this paper cites.
P. S. B. Dev, F. Ferrer, Y. Zhang and Y. Zhang, “Gravitational Waves from First-Order Phase Transition in a Simple Axion-Like Particle Model,” JCAP
Original
1905
Earlier work this paper cites.
A. Salvio, “Quasi-Conformal Models and the Early Universe,” Eur. Phys. J. C
Original
1907
Earlier work this paper cites.
J. J. Bennett, G. Buldgen, M. Drewes and Y. Y. Y. Wong, “Towards a precision calculation of the effective number of neutrinos
Original
1911
Earlier work this paper cites.
R. Utiyama and B. S. DeWitt, “Renormalization of a classical gravitational field interacting with quantized matter fields,” J. Math. Phys
1962
Earlier work this paper cites.
A. A. Starobinsky, “A New Type of Isotropic Cosmological Models Without Singularity,” Phys. Lett. B
1980
Earlier work this paper cites.
K. Kajantie, K. Rummukainen and M. E. Shaposhnikov, “A Lattice Monte Carlo study of the hot electroweak phase transition,” Nucl. Phys. B
1993
Earlier work this paper cites.
K. Freese, J. A. Frieman and A. V. Olinto, “Natural inflation with pseudo - Nambu-Goldstone bosons,” Phys. Rev. Lett
1993
Earlier work this paper cites.
K. Kajantie, M. Laine, K. Rummukainen and M. E. Shaposhnikov, “The Electroweak phase transition: A Nonperturbative analysis,” Nucl. Phys. B
1996
Earlier work this paper cites.
K. Kajantie, M. Laine, K. Rummukainen and M. E. Shaposhnikov, “Is there a hot electroweak phase transition at
1996
Earlier work this paper cites.
M. Sasaki and E. D. Stewart, “A General analytic formula for the spectral index of the density perturbations produced during inflation,” Prog. Theor. Phys
1996
Earlier work this paper cites.
A. Vilenkin and E. P. S. Shellard, “Cosmic Strings and Other Topological Defects,” Cambridge University Press, 2000, ISBN 978-0-521-65476-0
2000
Earlier work this paper cites.
C. Gordon, D. Wands, B. A. Bassett and R. Maartens, “Adiabatic and entropy perturbations from inflation,” Phys. Rev. D
2000
Earlier work this paper cites.
R. Z. Ferreira, A. Notari and G. Simeon, “Natural Inflation with a periodic non-minimal coupling,” JCAP
Original
2002
Earlier work this paper cites.
A. R. Liddle and S. M. Leach, “How long before the end of inflation were observable perturbations produced?,” Phys. Rev. D
2003
Earlier work this paper cites.
J. Crowder and N. J. Cornish, “Beyond LISA: Exploring future GW missions,” Phys. Rev. D
2005
Earlier work this paper cites.
K. Akita and M. Yamaguchi, “A precision calculation of relic neutrino decoupling,” JCAP
Original
2005
Earlier work this paper cites.
S. Kawamura
Original
2006
Earlier work this paper cites.
G. Harry, P. Fritschel, D. Shaddock, W. Folkner and E. Phinney, “Laser interferometry for the big bang observer,” Class. Quant. Grav
2006
Earlier work this paper cites.