2014

Galileons and strong gravity

Chagoya, Javier, Koyama, Kazuya, Niz, Gustavo et al.

Understand

In the context of a cubic Galileon model in which the Vainshtein mechanism suppresses the scalar field interactions with matter, we study low-density stars with slow rotation and static relativistic stars.

We develop an expansion scheme to find approximated solutions inside the Vainshtein radius, and show that deviations from General Relativity (GR), while considering rotation, are also suppressed by the Vainshtein mechanism.
In a quadratic coupling model, in which the scalarisation effect can significantly enhance deviations from GR in normal scalar tensor gravity, the Galileon term successfully suppresses the large deviations away from GR.
Moreover, using a realistic equation of state, we construct solutions for a relativistic star, and show that deviations from GR are more suppressed for higher density objects.

Built on

A. I. Vainshtein, Phys. Lett. B39
1972
Earlier work this paper cites.
G. W. Horndeski, Int. J. Theor. Phys. 10
1974
Earlier work this paper cites.
Field theoretical model for nuclear and neutron matter. II Neutron stars
J. Diaz Alonso and J. M. Ibanez Cabanell · 1985
Earlier work this paper cites.
S. Weinberg, Rev. Mod. Phys. 61
1989
Earlier work this paper cites.
Nonperturbative strong field effects in tensor - scalar theories of gravitation
Thibault Damour and Gilles Esposito-Farese · 1993
Earlier work this paper cites.
Tensor - scalar gravity and binary pulsar experiments
Thibault Damour and Gilles Esposito-Farese · 1996
Earlier work this paper cites.
Testing gravity to second post-newtonian order: a field-theory approach
Thibault Damour and Gilles Esposito-Farese · 1996
Earlier work this paper cites.
S. Perlmutter et al
1998
Earlier work this paper cites.
G. R. Dvali, G. Gabadadze and M. Porrati, Phys. Lett. B 485
2000
Earlier work this paper cites.
T. Damour, I. I. Kogan and A. Papazoglou, Phys. Rev. D 67
2003
Earlier work this paper cites.
Neutron Stars 1: Equation of State and Structure
P. Haensel, A.Y. Potekhin, and D.G. Yakovlev · 2007
Earlier work this paper cites.
A. V. Frolov, Phys. Rev. Lett. 101
Original
2008
Earlier work this paper cites.
T. Kobayashi and K. -i. Maeda, Phys. Rev. D 78
Original
2008
Earlier work this paper cites.

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Then

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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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Original
2013
Later among the works it cites.
T. Hiramatsu, W. Hu, K. Koyama and F. Schmidt, Phys. Rev. D 87
Original
2013
Later among the works it cites.
R. Kimura, T. Kobayashi and K. Yamamoto, Phys. Rev. D 85
Original
2013
Later among the works it cites.
A. Barreira, B. Li, W. A. Hellwing, C. M. Baugh and S. Pascoli, JCAP 1310
Original
2013
Later among the works it cites.
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2013
Later among the works it cites.
G. Tasinato, JHEP 1404
Original
2014
Closest in time.
C. M. Will, Living Rev. Rel. 17
2014
Closest in time.

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