Cosmological \(\alpha\)-attractors and de Sitter landscape
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Publication:2636320
DOI10.1007/JHEP12(2015)134zbMATH Open1387.83136arXiv1506.01368OpenAlexW3104352680MaRDI QIDQ2636320
Author name not available (Why is that?)
Publication date: 31 May 2018
Published in: (Search for Journal in Brave)
Abstract: We provide a unified description of cosmological -attractors and late-time acceleration, in excellent agreement with the latest Planck data. Our construction involves two superfields playing distinctive roles: one is the dynamical field and its evolution determines inflation and dark energy, the other is nilpotent and responsible for a landscape of vacua and supersymmetry breaking. We prove that the attractor nature of the theory is enhanced when combining the two sectors: cosmological attractors are very stable with respect to any possible value of the cosmological constant and, interestingly, to any generic coupling of the inflationary sector with the field responsible for uplifting. Finally, as related result, we show how specific couplings generate an arbitrary inflaton potential in a supergravity framework with varying Kahler curvature.
Full work available at URL: https://arxiv.org/abs/1506.01368
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