期刊
JOURNAL OF HIGH ENERGY PHYSICS
卷 -, 期 4, 页码 -出版社
SPRINGER
DOI: 10.1007/JHEP04(2015)058
关键词
Cosmology of Theories beyond the SM; Supergravity Models; Supersymmetry Breaking; Superstring Vacua
资金
- German Science Foundation (DFG) within the Collaborative Research Center 676 Particles, Strings and the Early Universe
- SFB-Transregio TR33 The Dark Universe
- ERC advanced grant MassTeV
- Joachim Herz Foundation
- Alexander von Humboldt foundation
- DESY Hamburg
We analyze the interplay between Kahler moduli stabilization and chaotic inflation in supergravity. While heavy moduli decouple from inflation in the supersymmetric limit, supersymmetry breaking generically introduces non-decoupling effects. These lead to inflation driven by a soft mass term, m(phi)(2) similar to mm(3/2), where m is a supersymmetric mass parameter. This scenario needs no stabilizer field, but the stability of moduli during inflation imposes a large supersymmetry breaking scale, m(3/2) >> H, and a careful choice of initial conditions. This is illustrated in three prominent examples of moduli stabilization: KKLT stabilization, Kahler Uplifting, and the Large Volume Scenario. Remarkably, all models have a universal effective inflaton potential which is flattened compared to quadratic inflation. Hence, they share universal predictions for the CMB observables, in particular a lower bound on the tensor-to-scalar ratio, r greater than or similar to 0.05.
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