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- W3011452352 abstract "Generic features of models of inflation obtained from string compactifications are the correlations between the model parameters and the postinflationary evolution of the universe. Thus, the postinflationary evolution depends on the inflationary model parameters, and accurate inflationary predictions require that this be incorporated in the evolution of the primordial spectrum. The fibre inflation model is a promising model of inflation constructed in type IIB string theory. This model has two interesting features in its postinflationary evolution. The reheating temperature of the model is directly correlated with the model parameters. The model also necessarily predicts some dark radiation, which can be sizable for certain choices of discrete parameters in the model. We analyze this model in detail using publicly available codes---modechord and cosmomc with the latest Planck+BICEP2/Keck array data to constrain the model parameters and ${N}_{text{pivot}}$ (the number of $e$-foldings between the horizon exit of the CMB pivot mode and the end of inflation). We also carry out the same analysis using the publicly available code cobaya. We find the results of both the analysis to be in agreement. Our analysis provides the basic methods necessary to extract precise inflationary prediction in string models incorporating correlations between model parameters and postinflationary evolution." @default.
- W3011452352 created "2020-03-23" @default.
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- W3011452352 date "2020-12-18" @default.
- W3011452352 modified "2023-10-18" @default.
- W3011452352 title "Fiber inflation and precision CMB data" @default.
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- W3011452352 doi "https://doi.org/10.1103/physrevd.102.123531" @default.
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