Reconstructing a general inflationary action

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dc.creatorBean, Rachel
dc.creatorChung, Daniel J. H.
dc.creatorGeshnizjani, Ghazal
dc.date2008-01-04
dc.date2008-04-02
dc.date.accessioned2026-07-07T12:14:03Z
dc.date.available2026-07-07T12:14:03Z
dc.descriptionIf inflation is to be considered in an unbiased way, as possibly originating from one of a wide range of underlying theories, then observations need not be simply applied to reconstructing the inflaton potential, V(ϕ), or a specific kinetic term, as in DBI inflation, but rather to reconstruct the inflationary action in its entirety. We discuss the constraints that can be placed on a general single field action from measurements of the primordial scalar and tensor fluctuation power spectra and non-Gaussianities. We also present the flow equation formalism for reconstructing a general inflationary Lagrangian, L(X,ϕ), with X={1/2}\partial_μϕ\partial^μϕ, in a general gauge, that reduces to canonical and DBI inflation in the specific gauge \partial L/\partial X = c_s^{-1}.
dc.description16 pages, 1 figure, References added, typos corrected
dc.identifierhttps://arxiv.org/abs/0801.0742
dc.identifierhttp://arxiv.org/abs/0801.0742
dc.identifierPhys.Rev.D78:023517,2008
dc.identifierdoi:10.1103/PhysRevD.78.023517
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/211062
dc.subjectAstrophysics
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectHigh Energy Physics - Theory
dc.titleReconstructing a general inflationary action
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