期刊
PHYSICAL REVIEW D
卷 88, 期 4, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.88.043508
关键词
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资金
- STFC [ST/J000353/1]
- Swiss National Science Foundation
- Royal Society [JP100273]
- Science and Technology Facilities Council [ST/J000353/1] Funding Source: researchfish
- STFC [ST/J000353/1] Funding Source: UKRI
Light scalar fields present during inflation can lead to interesting observable signatures, especially in models with nonequilibrium reheating dynamics. We study a supersymmetric hybrid inflation model with a third scalar whose lightness is protected by symmetry, using analytical and numerical techniques, and demonstrate that the amplitude, the spectral index and the non-Gaussianity parameter f(NL) of the primordial curvature perturbation are within the Planck observational bounds for suitable parameter values.
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