Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Primordial density perturbation in the curvaton scenario.
AU - Lyth, David H.
AU - Ungarelli, Carlo
AU - Wands, David
N1 - This paper explained how the curvaton scenario can generate a non-gaussian primordial perturbation which will probably be observable in the forseeable future. The standard scenario cannot produce non-gaussianity at this level, therefore we have an almost certain way of distinguishing between the scenarios. 179 citations (SPIRES). RAE_import_type : Journal article RAE_uoa_type : Physics
PY - 2003/1/10
Y1 - 2003/1/10
N2 - We analyze the primordial density perturbation when it is generated by a “curvaton” field different from the inflaton. In some cases this perturbation may have large isocurvature components, fully correlated or anticorrelated with the adiabatic component. It may also have a significant non-Gaussian component. All of these effects are calculated in a form which will enable direct comparison with current and forthcoming observational data.
AB - We analyze the primordial density perturbation when it is generated by a “curvaton” field different from the inflaton. In some cases this perturbation may have large isocurvature components, fully correlated or anticorrelated with the adiabatic component. It may also have a significant non-Gaussian component. All of these effects are calculated in a form which will enable direct comparison with current and forthcoming observational data.
U2 - 10.1103/PhysRevD.67.023503
DO - 10.1103/PhysRevD.67.023503
M3 - Journal article
VL - 67
JO - Physical Review D – Particles and Fields
JF - Physical Review D – Particles and Fields
SN - 1550-2368
IS - 2
M1 - 023503
ER -