التفاصيل البيبلوغرافية
| العنوان: |
Gravity waves and gravitino dark matter in μ-hybrid inflation. |
| المؤلفون: |
Okada, Nobuchika1 okadan@ua.edu, Shafi, Qaisar2 |
| المصدر: |
Physics Letters B. Dec2018, Vol. 787, p141-145. 5p. |
| مصطلحات موضوعية: |
*GRAVITY waves, *GRAVITINO, *DARK matter, *SUPERSYMMETRY, NEUTRALINOS |
| مستخلص: |
Abstract We propose a novel reformulation of supersymmetric (more precisely μ -) hybrid inflation based on a local U(1) or any suitable extension of the minimal supersymmetric standard model (MSSM) which also resolves the μ problem. We employ a suitable Kahler potential which effectively yields quartic inflation with non-minimal coupling to gravity. Imposing the gravitino Big Bang Nucleosynthesis (BBN) constraint on the reheat temperature (T r ≲ 10 6 GeV) and requiring a neutralino LSP, the tensor to scalar ratio (r) has a lower bound r ≳ 0.004. The U(1) symmetry breaking scale lies between 108 and 1012 GeV. We also discuss a scenario with gravitino dark matter whose mass is a few GeV. [ABSTRACT FROM AUTHOR] |
| قاعدة البيانات: |
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