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- W3100255228 abstract "We continue developing cosmological models involving nilpotent chiral superfields, which provide a simple unified description of inflation and the current acceleration of the universe in the supergravity context. We describe here a general class of models with a positive cosmological constant at the minimum of the potential, such that supersymmetry is spontaneously broken in the direction of the nilpotent superfield $S$. In the unitary gauge, these models have a simple action where all highly non-linear fermionic terms of the classical Volkov-Akulov action disappear. We present masses for bosons and fermions in these theories. By a proper choice of parameters in this class of models, one can fit any possible set of the inflationary parameters $n_{s}$ and $r$, a broad range of values of the vacuum energy $V_{0}$, which plays the role of the dark energy, and achieve a controllable level of supersymmetry breaking. This can be done without introducing light moduli, such as Polonyi fields, which often lead to cosmological problems in phenomenological supergravity." @default.
- W3100255228 created "2020-11-23" @default.
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- W3100255228 date "2015-03-01" @default.
- W3100255228 modified "2023-09-25" @default.
- W3100255228 title "Inflation, de Sitter landscape and super-Higgs effect" @default.
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- W3100255228 doi "https://doi.org/10.1007/jhep03(2015)111" @default.
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