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General inflaton potentials in supergravity
Renata Kallosh, Andrei Linde, Tomas Rube
We describe a way to construct supergravity models with an arbitrary inflaton potential V (ϕ) and show that all other scalar fields in this class of models can be stabilized at the…
Towards a non-anthropic solution to the cosmological constant problem
Andrei Linde, Vitaly Vanchurin
Many probability measures in the multiverse depend exponentially on some observable parameters, giving rise to potential problems such as youngness bias, Q-catastrophe etc. In this…
New models of chaotic inflation in supergravity
Renata Kallosh, Andrei Linde
We introduce a new class of models of chaotic inflation inspired by the superconformal approach to supergravity. This class of models allows a functional freedom of choice of the i…
Superconformal Symmetry, NMSSM, and Inflation
Sergio Ferrara, Renata Kallosh, Andrei Linde +2
We identify a particularly simple class of supergravity models describing superconformal coupling of matter to supergravity. In these models, which we call the canonical superconfo…
Jordan Frame Supergravity and Inflation in NMSSM
Sergio Ferrara, Renata Kallosh, Andrei Linde +2
We present a complete explicit N=1, d=4 supergravity action in an arbitrary Jordan frame with non-minimal scalar-curvature coupling of the form . The action is de…
On adiabatic perturbations in the ekpyrotic scenario
A. Linde, V. Mukhanov, A. Vikman
In a recent paper arXiv:0910.2230, Khoury and Steinhardt proposed a way to generate adiabatic cosmological perturbations with a nearly flat spectrum in a contracting Universe. To p…