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- W4313305477 abstract "We perform a Bayesian study of a generalization of the basic $alpha$-attractor T model given by the potential $V(phi)=V_0left[1-text{sech}^{p}left(phi/sqrt{6alpha}M_{pl}right)right]$ where $phi$ is the inflaton field and the parameter $alpha$ corresponds to the inverse curvature of the scalar manifold in the conformal or superconformal realizations of the attractor models. Such generalization is characterized by the power $p$ which includes the basic or base model for $p=2$. Once the priors for the parameters of the $alpha$-attractor potential are set by numerical exploration, we perform the corresponding statistical analysis for the cases $p=1, , 2, , 3, ,4$, and derive posteriors. Considering the original $alpha$-attractor potential as the base model, we calculate the evidence for our generalization, and conclude that the $p=4$ model is preferred by the CMB data. We also present constraints for the parameter $alpha$. Interestingly, all the cases studied prefer a specific value for the tensor-to-scalar ratio given by $rsimeq 0.0025$." @default.
- W4313305477 created "2023-01-06" @default.
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- W4313305477 date "2022-12-27" @default.
- W4313305477 modified "2023-09-23" @default.
- W4313305477 title "Bayesian analysis for a class of $alpha$-attractor inflationary models" @default.
- W4313305477 doi "https://doi.org/10.48550/arxiv.2212.13610" @default.
- W4313305477 hasPublicationYear "2022" @default.
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