The DOI matches its Crossref record; 104 of the 104 references it cites were found in a registry or an index.
Enhanced non-Gaussianity from excited initial states
Open accessAbstract
We use the techniques of effective field theory in an expanding universe to examine the effect of choosing an excited inflationary initial state built over the Bunch–Davies state on the CMB bi-spectrum. We find that, even for Hadamard states, there are unexpected enhancements in the bi-spectrum for certain configurations in momentum space due to interactions of modes in the early stages of inflation. These enhancements can be parametrically larger than the standard ones and are potentially observable in future data. These initial state effects have a characteristic signature in l -space which distinguishes them from the usual contributions, with the enhancement being most pronounced for configurations corresponding to flattened triangles for which two momenta are collinear.
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Cited by
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FIVE-YEAR WILKINSON MICROWAVE ANISOTROPY PROBE OBSERVATIONS: COSMOLOGICAL INTERPRETATION
Komatsu, E., Dunkley, J., Nolta, M. R., Bennett, C. L., Gold, B., Hinshaw, G., Jarosik, N., Larson, D., Limon, M., Page, L., et al. (2009) · The Astrophysical Journal Supplement Series · doi:10.1088/0067-0049/180/2/330 · Cited by 5,786
Cosmology and Fundamental Physics with the Euclid Satellite
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Metadata
- Authors
- Holman, R., & Tolley, A. J.
- Venue
- Journal of Cosmology and Astroparticle Physics
- Publisher
- IOP Publishing
- Published
- 2008-05-06
- Volume
- 2008
- Issue
- 05
- Pages
- 001
- ISSN
- 1475-7508 (ISSN-L)
- 1475-7516
- OpenAlex
- W1978365844
- Cited by
- 274
- References
- 104
- FWCI
- 13.36
- Type
- journal article
- Language
- en
- Open access
- green
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