48 citations · 232 across the 11 of their papers we have counts for
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gr-qc2010★ 2 cited
Effective Inhomogeneous Cosmologies and Emerging Scalar Fields
Thomas Buchert, Nathaniel Obadia, Xavier Roy
In this contribution we summarize two recent applications of a correspondence between backreaction terms in averaged inhomogeneous cosmologies and an effective scalar field (the `m…
gr-qc2010★ 19 cited
Effective inhomogeneous inflation: curvature inhomogeneities of the Einstein vacuum
Thomas Buchert, Nathaniel Obadia
We consider spatially averaged inhomogeneous universe models and argue that, already in the absence of sources, an effective scalar field arises through foliating and spatially ave…
gr-qc2010★ 1 cited
Why does the Unruh effect rely on Lorentz invariance, while Hawking radiation does not ?
David Campo, Nathaniel Obadia
We show that without Lorentz invariance, the Unruh effect does not exist. We use modified dispersion relations and describe in turn: the non-thermal nature of the vacuum (defined i…