TY  - RPRT
AU  - Buchmuller, Wilfried
AU  - Dudas, Emilian
AU  - Heurtier, Lucien
AU  - Westphal, Alexander
AU  - Wieck, Clemens
AU  - Winkler, Martin Wolfgang
TI  - Challenges for Large-Field Inflation and Moduli Stabilization
IS  - DESY-15-014
M1  - PUBDB-2015-01152
M1  - DESY-15-014
M1  - CPHT-RR002.0115
M1  - arXiv:1501.0581
T2  - Red Report
SP  - 44
PY  - 2015
N1  - OA
AB  - We analyze the interplay between Káhler 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<sub>φ</sub><sup>2</sup>  ∼ m m<sub>3/2</sub>, 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<sub>3/2</sub>  >> H, and a careful choice of initial conditions. This is illustrated in three prominent examples of moduli stabilization: KKLT stabilization, Káhler 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  >~0.05.
LB  - PUB:(DE-HGF)29 ; PUB:(DE-HGF)15
UR  - https://bib-pubdb1.desy.de/record/207168
ER  -