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Backreaction during inflation: a physical gauge invariant formulation · Around

2011

Backreaction during inflation: a physical gauge invariant formulation

Finelli, F., Marozzi, G., Vacca, G. P. et al.

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Within a genuinely gauge invariant approach recently developed for the computation of the cosmological backreaction, we study, in a cosmological inflationary context and with respect to various observers, the impact of scalar fluctuations on the space-time dynamics in the long wavelength limit.

We stress that such a quantum backreaction effect is evaluated in a truly gauge independent way using a set of effective equations which describe the dynamics of the averaged geometry.
In particular we show under what conditions the free falling (geodetic) observers do not experience any scalar-induced backreaction in the effective Hubble rate and fluid equation of state.

Built on

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Then

F. Finelli, G. Marozzi, G. P. Vacca and G. Venturi, Phys. Rev. D 74
Original
2006
Later among the works it cites.
M. Gasperini, G. Marozzi, and G. Veneziano, JCAP 03
2009
Later among the works it cites.
F. Finelli, G. Marozzi, A. A. Starobinsky, G. P. Vacca and G. Venturi, Phys. Rev. D 79
2009
Later among the works it cites.
M. Gasperini, G. Marozzi, and G. Veneziano, JCAP 02
2010
Later among the works it cites.
G. Marozzi, JCAP 01
2011
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