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Inflation, de Sitter Landscape and Super-Higgs effect

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arxiv 1411.5671 v2 pith:YOPZ5NP6 submitted 2014-11-20 hep-th astro-ph.COgr-qchep-ph

classification hep-thastro-ph.COgr-qchep-ph
keywords modelscosmologicalactionclassenergyinflationnilpotentparameters
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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.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Linear and nonlinear supersymmetry in field and string theory

    hep-th 2025-06 conditional novelty 7.0 of 10

    Consistency criteria for constrained superfields, a gravitino energy and particle-production puzzle, the unique leading-order massive spin-2 to supergravity coupling, and a twisted Scherk-Schwarz orientifold with full...

  2. Gravitational Dark Matter Production in Supergravity $\alpha$-Attractor Inflation

    hep-ph 2024-11 conditional novelty 6.0 of 10

    Supergravity corrections in α-attractor inflation suppress gravitational dark matter production and shift the required reheating temperature to 10^3-10^7 GeV.

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