TY  - JOUR
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
JO  - Journal of high energy physics
VL  - 1504
IS  - 4
SN  - 1029-8479
CY  - Berlin
PB  - Springer
M1  - PUBDB-2015-04196
M1  - arXiv:1501.05812
SP  - 58
PY  - 2015
N1  - OA
AB  - We analyze the interplay between Kähler 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 φ 2  ∼ 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, Kähler 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)16
UR  - <Go to ISI:>//WOS:000356853600001
DO  - DOI:10.1007/JHEP04(2015)058
UR  - https://bib-pubdb1.desy.de/record/275712
ER  -