We describe a simple class of cosmological models called -attractors, which provide an excellent fit to the latest Planck data. These theories are most naturally formulated in the context of supergravity with logarithmic Kähler potentials. We develop generalized versions of these models which can describe not only inflation but also dark energy and supersymmetry breaking.
DOI:https://doi.org/10.1103/PhysRevD.91.083528
© 2015 American Physical Society
Blue, brown, and green lines show the potentials of the T-models for correspondingly. For comparison, the red line in the center shows the potential of the GL model [2], which is an -attractor with . The potential is shown in units of , the field is shown in Planck units. Smaller corresponds to more narrow minima of the potentials.
Reuse & PermissionsPredictions of the simplest -attractor T-models with the potential cut through the most interesting part of the Planck 2015 plot for and [12]. They are shown as a purple vertical line starting at the predictions of the simplest quadratic model for (red star), going down through for and for , through the predictions of the Starobinsky model for , through the predictions of the GL model for , and continuing all the way down to for (blue star). This line is shown for .
Reuse & PermissionsPredictions of E-models with . They are shown as a thick blue curve starting at the predictions of the simplest quadratic model for , going down through the predictions of the Starobinsky model for , the predictions of the E-model generalization of the GL model (5.7) for , and continuing all the way down to for . This line is shown for . The red circles, from the bottom up, correspond to , , and .
Reuse & PermissionsE-model potential in units of for . Smaller corresponds to more narrow minima of the potentials.
Reuse & Permissions
