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It is quite well known for some time that string inspired axionic terms of the form $\nu (\phi)\tilde{R}R$, known also as Chern-Simons terms, do not affect the scalar perturbations and the background evolution for a flat Friedman-Robertson-Walker Universe.
A. A. Starobinsky, Phys. Lett. 91B
1980
Earlier work this paper cites.
A. H. Guth, Phys. Rev. D 23
1981
Earlier work this paper cites.
A. D. Linde, Phys. Lett. 129B
1983
Earlier work this paper cites.
M. Kamionkowski and A. Kosowsky, Phys. Rev. D 57
1998
Earlier work this paper cites.
A.S.Sakharov and M.Yu.Khlopov, The nonhomogeneity problem for the primordial axion field. Yadernaya Fizika (1994) V. 57, PP. 514- 516. ( Phys.Atom.Nucl. (1994) V. 57, PP. 485-487); A.S.Sakharov, D.D.Sokoloff and M.Yu.Khlopov, Large scale modulation of the distribution of coherent oscillations of a primordial axion field in the Universe. Yadernaya Fizika (1996) V. 59, PP. 1050-1055. (Phys.Atom.Nucl. (1996) V. 59, PP. 1005-1010); M .Yu.Khlopov, A.S.Sakharov and D.D.Sokoloff, The nonlinear modulation of the density distribution in standard axionic CDM and its cosmological impact. Nucl.Phys. B (Proc. Suppl.) (1999) V. 72, 105-109
1999
Earlier work this paper cites.
H. J. Matschull, Class. Quant. Grav. 16
1999
Earlier work this paper cites.
K. Choi, J. c. Hwang and K. W. Hwang, Phys. Rev. D 61
2000
Earlier work this paper cites.
S. Nojiri and S. D. Odintsov, Phys. Rev. D 68
2003
Earlier work this paper cites.
J. c. Hwang and H. Noh, Phys. Rev. D 71
2005
Earlier work this paper cites.
J. R. Pritchard and M. Kamionkowski, Annals Phys. 318
2005
Earlier work this paper cites.
S. Nojiri, S.D. Odintsov, eConf C0602061
2007
Earlier work this paper cites.
V. K. Oikonomou, J. D. Vergados and C. C. Moustakidis, Nucl. Phys. B 773
2007
Earlier work this paper cites.
T. L. Smith, A. L. Erickcek, R. R. Caldwell and M. Kamionkowski, Phys. Rev. D 77
2008
Earlier work this paper cites.
M. Satoh, S. Kanno and J. Soda, Phys. Rev. D 77
2008
Earlier work this paper cites.
M. Satoh and J. Soda, JCAP 0809
2008
Cited alongside, same era.
F. Izaurieta, E. Rodriguez, P. Minning, P. Salgado and A. Perez, Phys. Lett. B 678
2009
Cited alongside, same era.
C. F. Sopuerta and N. Yunes, Phys. Rev. D 80
2009
Cited alongside, same era.
K. Konno, T. Matsuyama and S. Tanda, Prog. Theor. Phys. 122
2009
Cited alongside, same era.
S. Capozziello, M. De Laurentis, Phys. Rept. 509
2010
Cited alongside, same era.
D. J. E. Marsh, Phys. Rept. 643
2016
Later among the works it cites.
K. Yagi, N. Yunes and T. Tanaka, Phys. Rev. Lett. 109
2016
Later among the works it cites.
2016
Later among the works it cites.
2016
Later among the works it cites.
S. Nojiri, S. D. Odintsov and V. K. Oikonomou, Phys. Rept. 692
2017
Later among the works it cites.
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2010
Cited alongside, same era.
A. B. Balakin and W. T. Ni, Class. Quant. Grav. 27
2010
Cited alongside, same era.
S. Nojiri, S.D. Odintsov, Phys. Rept. 505
2011
Cited alongside, same era.
G. J. Olmo, Int. J. Mod. Phys. D 20
2011
Cited alongside, same era.
A. de la Cruz-Dombriz and D. Saez-Gomez, Entropy 14
2012
Cited alongside, same era.
A. B. Balakin, V. V. Bochkarev and N. O. Tarasova, Eur. Phys. J. C 72
2012
Cited alongside, same era.
K. Yagi, N. Yunes and T. Tanaka, Phys. Rev. D 86
2014
Cited alongside, same era.
2017
Later among the works it cites.
M. C. D. Marsh, H. R. Russell, A. C. Fabian, B. P. McNamara, P. Nulsen and C. S. Reynolds, JCAP 1712
2017
Later among the works it cites.
Z. Haghani, T. Harko and S. Shahidi, Eur. Phys. J. C 77
2017
Later among the works it cites.
S. Boran, S. Desai, E. O. Kahya and R. P. Woodard, Phys. Rev. D 97
2018
Later among the works it cites.
A. Nishizawa and T. Kobayashi, Phys. Rev. D 98
2018
Later among the works it cites.
D. Yoshida and J. Soda, Int. J. Mod. Phys. D 27
2018
Later among the works it cites.
2018
Later among the works it cites.
A. Caputo, C. P. Garay and S. J. Witte, Phys. Rev. D 98
2018
Later among the works it cites.