Precision of inflaton potential reconstruction from CMB using the general slow-roll approximation

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Through a principal component analysis, we study how accurately cosmic microwave background observables can constrain inflaton potentials in a model-independent manner. We apply the general slow-roll approximation in our analysis where we allow, in contrast to the standard slow-roll approximation, the possibility of variations in V''(phi) and take into account the fact that horizon crossing is not an instantaneous event. Our analysis provides a set of modes to be used in fitting observables. We find that of order five of these modes will be constrained by future observations, so a fully general data analysis package could use the amplitudes of just a handful of modes as free parameters and retain all relevant information in the data.
Publisher
American Physical Society
Issue Date
2005-07
Language
English
Article Type
Article
Keywords

PROBE WMAP OBSERVATIONS; DIGITAL SKY SURVEY; PRIMORDIAL POWER SPECTRUM; COSMOLOGICAL PARAMETERS; DATA RELEASE; ANISOTROPY; 2ND-ORDER

Citation

PHYSICAL REVIEW D - PARTICLES, FIELDS, GRAVITATION AND COSMOLOGY, v.72, no.2, pp.1 - 8

ISSN
1550-7998
DOI
10.1103/PhysRevD.72.023510
URI
http://hdl.handle.net/10203/89823
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