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1984
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H. Motohashi and W. Hu, (2020), arXiv:2002.07967 [hep-th]
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2002
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Then

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2015
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2016
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2019

Weakly-coupled stealth solution in scordatura degenerate theory

Motohashi, Hayato, Mukohyama, Shinji

Understand

In scalar-tensor theories we revisit the issue of strong coupling of perturbations around stealth solutions, i.e.\ backgrounds with the same forms of the metric as in General Relativity but with non-trivial configurations of the scalar field.

The simplest among them is a stealth Minkowski (or de Sitter) solution with a constant, timelike derivative of the scalar field, i.e.\ ghost condensation.
In the decoupling limit the effective field theory (EFT) describing perturbations around the stealth Minkowski (or de Sitter) solution shows the universal dispersion relation of the form $\omega^2 = \alpha k^4/M^2$, where $M$ is a mass scale characterizing the background scalar field and $\alpha$ is a dimensionless constant.
Provided that $\alpha$ is positive and of order unity, a simple scaling argument shows that the EFT is weakly coupled all the way up to $M$.

Built on

H. Motohashi and M. Minamitsuji, Phys. Rev. D99
Original
1901
Earlier work this paper cites.
C. Charmousis, M. Crisostomi, R. Gregory, and N. Stergioulas, Phys. Rev. D100
Original
1903
Earlier work this paper cites.
K. Takahashi, H. Motohashi, and M. Minamitsuji, Phys. Rev. D100
Original
1904
Earlier work this paper cites.
M. Minamitsuji and J. Edholm, Phys. Rev. D100
Original
1907
Earlier work this paper cites.
C. Charmousis, M. Crisostomi, D. Langlois, and K. Noui, Class. Quant. Grav. 36
Original
1907
Earlier work this paper cites.
J. Ben Achour, H. Liu, and S. Mukohyama, (2019), arXiv:1910.11017 [gr-qc]
Original
1910
Earlier work this paper cites.
T. Appelquist and J. Carazzone, Phys. Rev. D11
1975
Earlier work this paper cites.
S. Weinberg, Proceedings, Symposium Honoring Julian Schwinger on the Occasion of his 60th Birthday: Los Angeles, California, February 18-19, 1978, Physica A96
1979
Earlier work this paper cites.
H. Georgi, Weak Interactions and Modern Particle Theory (1984)
1984
Earlier work this paper cites.
R. Kase and S. Tsujikawa, Int. J. Mod. Phys. D23
Original
1984
Earlier work this paper cites.
J. Polchinski, in Proceedings, Theoretical Advanced Study Institute (TASI 92): From Black Holes and Strings to Particles: Boulder, USA, June 1-26, 1992 (1992) pp. 0235–276, arXiv:hep-th/9210046 [hep-th]
1992
Earlier work this paper cites.
H. Motohashi and W. Hu, (2020), arXiv:2002.07967 [hep-th]
Original
2002
Earlier work this paper cites.

Similar

S. Mukohyama, Phys. Rev. D71
2005
Cited alongside, same era.
H.-C. Cheng, M. A. Luty, S. Mukohyama, and J. Thaler, JHEP 05
2006
Cited alongside, same era.
P. Creminelli, M. A. Luty, A. Nicolis, and L. Senatore, JHEP 12
2006
Cited alongside, same era.
N. Arkani-Hamed, H.-C. Cheng, M. A. Luty, S. Mukohyama, and T. Wiseman, JHEP 01
2007
Cited alongside, same era.
C. Cheung, P. Creminelli, A. L. Fitzpatrick, J. Kaplan, and L. Senatore, JHEP 03
Original
2008
Cited alongside, same era.
S. Mukohyama, JHEP 09
Original
2009
Cited alongside, same era.