Report/Internal Report

PUBDB-2015-01152

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Challenges for Large-Field Inflation and Moduli Stabilization

Buchmuller, W.DESY* ; Dudas, E.DESY* ; Heurtier, L. ; Westphal, A.DESY* ; Wieck, C. (Corresponding Author)DESY* ; Winkler, M. W.

2015

This record in other databases:  

Report No.: CPHT-RR002.0115; DESY-15-014; arXiv:1501.0581

Abstract: We analyze the interplay between K\'ahler 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, $m_\varphi^2 \sim m m_{3/2}$, 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, $m_{3/2} \gg H$, and a careful choice of initial conditions. This is illustrated in three prominent examples of moduli stabilization: KKLT stabilization, K\'ahler 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, $r \gtrsim 0.05$.

Note: OA

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Contributing Institute(s):

1. Theorie-Gruppe (T)

Research Program(s):

1. 611 - Fundamental Particles and Forces (POF3-611) (POF3-611)
2. VH-GS-500 - PIER Helmholtz Graduate School (2015_IFV-VH-GS-500) (2015_IFV-VH-GS-500)
3. MASSTEV - Mass hierarchy and particle physics at the TeV scale (226371) (226371)

Experiment(s):

1. No specific instrument

Appears in the scientific report 2015

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Linked articles:

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Report/Journal Article Buchmuller, W.DESY* ; Dudas, E. ; Heurtier, L. ; Westphal, A.DESY* ; Wieck, C. (Corresponding author)DESY* ; Winkler, M. W.
Challenges for large-field inflation and moduli stabilization
Journal of high energy physics 1504(4), 58 (2015) [10.1007/JHEP04(2015)058]2015     Files  Fulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

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