The DOI matches its Crossref record; 2 of the 2 references it cites were found in a registry or an index.
Gauge-invariant second-order perturbations and non-Gaussianity from inflation
Open accessAbstract
We present the first computation of the cosmological perturbations generated during inflation up to second order in deviations from the homogeneous background solution. Our results, which fully account for the inflaton self-interactions as well as for the second-order fluctuations of the background metric, provide the exact expression for the gauge-invariant curvature perturbation bispectrum produced during inflation in terms of the slow-roll parameters or, alternatively, in terms of the scalar spectral $n_S$ and and the tensor to adiabatic scalar amplitude ratio $r$. The bispectrum represents a specific non-Gaussian signature of fluctuations generated by quantum oscillations during slow-roll inflation. However, our findings indicate that detecting the non-Gaussianity in the cosmic microwave background anisotropies emerging from the second-order calculation will be a challenge for the forthcoming satellite experiments.
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Citations
Cites
Gauge-invariant cosmological perturbations
Bardeen, J. M. (1980) · Physical Review D · doi:10.1103/physrevd.22.1882 · Cited by 2,393
Particle physics models of inflation and the cosmological density perturbation
Lyth, D. H., & Riotto, A. (1999) · Physics Reports · doi:10.1016/s0370-1573(98)00128-8 · Cited by 2,064
Self-citation
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
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
Non-gaussian features of primordial fluctuations in single field inflationary models
Maldacena, J. (2003) · Journal of High Energy Physics · doi:10.1088/1126-6708/2003/05/013 · Cited by 2,906
DBI in the sky: Non-Gaussianity from inflation with a speed limit
Alishahiha, M., Silverstein, E., & Tong, D. (2004) · Physical Review D · doi:10.1103/physrevd.70.123505 · Cited by 1,064
Inflation dynamics and reheating
Bassett, B. A., Tsujikawa, S., & Wands, D. (2006) · Reviews of Modern Physics · doi:10.1103/revmodphys.78.537 · Cited by 1,020
Metadata
- Authors
- Acquaviva, V., Bartolo, N., Matarrese, S., & Riotto, A.
- Venue
- Nuclear Physics B
- Publisher
- Elsevier BV
- Published
- 2003-09
- Volume
- 667
- Issue
- 1-2
- Pages
- 119-148
- ISSN
- 0550-3213 (ISSN-L)
- OpenAlex
- W2050287430
- Cited by
- 723
- References
- 2
- FWCI
- 22.42
- Type
- journal article
- Language
- en
- Open access
- green
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- Acquaviva, V., Bartolo, N., Matarrese, S., & Riotto, A. (2003). Gauge-invariant second-order perturbations and non-Gaussianity from inflation. Nuclear Physics B. https://doi.org/10.1016/s0550-3213(03)00550-9
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