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Conformal invariance of curvature perturbation · Around

2011

Conformal invariance of curvature perturbation

Gong, Jinn-Ouk, Hwang, Jai-chan, Park, Wan Il et al.

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We show that in the single component situation all perturbation variables in the comoving gauge are conformally invariant to all perturbation orders.

Generally we identify a special time slicing, the uniform-conformal transformation slicing, where all perturbations are again conformally invariant to all perturbation orders.
We apply this result to the delta N formalism, and show its conformal invariance.

Built on

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Similar

See e.g. T. Damour and G. Esposito-Farese, Class. Quant. Grav. 9
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H. Noh and J. Hwang, Phys. Rev. D 69
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Then

See also T. Chiba and M. Yamaguchi, JCAP 0810
Original
2008
Later among the works it cites.
Y. S. Song and K. Koyama, JCAP 0901
Original
2009
Later among the works it cites.
N. Makino and M. Sasaki, Prog. Theor. Phys. 86
2010
Later among the works it cites.
A. Naruko, M. Sasaki, Class. Quant. Grav. 28
Original
2011
Closest in time.

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