The DOI matches its Crossref record; 25 of the 25 references it cites were found in a registry or an index.
Large non-Gaussianities with intermediate shapes from quasi-single-field inflation
Open accessAbstract
We study the slow-roll inflation models, where the inflaton slow-rolls along a trajectory whose orthogonal directions are lifted by potentials with masses of order the Hubble parameter. In these models large non-Gaussianities can be generated through the transformation from the isocurvature modes to the curvature mode, once the inflaton trajectory turns. We find large bispectra with a one-parameter family of novel shapes, interpolating between the equilateral and local shape. According to the in-in formalism, the shapes of these non-Gaussianities are different from a simple projection from the isocurvature non-Gaussian correlation functions.
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Cites
Inflationary universe: A possible solution to the horizon and flatness problems
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Observational signatures and non-Gaussianities of general single-field inflation
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Cited by
SEVEN-YEAR WILKINSON MICROWAVE ANISOTROPY PROBE(WMAP) OBSERVATIONS: COSMOLOGICAL INTERPRETATION
Komatsu, E., Smith, K. M., Dunkley, J., Bennett, C. L., Gold, B., Hinshaw, G., Jarosik, N., Larson, D., Nolta, M. R., Page, L., et al. (2011) · The Astrophysical Journal Supplement Series · doi:10.1088/0067-0049/192/2/18 · Cited by 8,802
Desjacques, V., Jeong, D., & Schmidt, F. (2018) · Physics Reports · doi:10.1016/j.physrep.2017.12.002 · Cited by 817
Quasi-single field inflation and non-Gaussianities
Chen, X., & Wang, Y. (2010) · Journal of Cosmology and Astroparticle Physics · doi:10.1088/1475-7516/2010/04/027 · Cited by 567
Self-citationFeatures of heavy physics in the CMB power spectrum
Achúcarro, A., Gong, J.-O., Hardeman, S., Palma, G. A., & Patil, S. P. (2011) · Journal of Cosmology and Astroparticle Physics · doi:10.1088/1475-7516/2011/01/030 · Cited by 381
Metadata
- Authors
- Chen, X., & Wang, Y.
- Venue
- Physical Review D
- Publisher
- American Physical Society (APS)
- Published
- 2010-03-11
- Volume
- 81
- Issue
- 6
- ISSN
- 0556-2821 (ISSN-L)
- 1550-7998
- 1550-2368
- OpenAlex
- W1991308393
- Cited by
- 297
- References
- 25
- FWCI
- 11.31
- Type
- journal article
- Language
- en
- Open access
- green
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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