Supersymmetric flat directions and resonant gravitino production
| Autor: | Anjishnu Sarkar, Raghavan Rangarajan, Namit Mahajan |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
Physics
Nuclear and High Energy Physics Particle physics Cosmology and Nongalactic Astrophysics (astro-ph.CO) media_common.quotation_subject Supergravity High Energy Physics::Phenomenology FOS: Physical sciences Supersymmetry Parameter space Upper and lower bounds Universe High Energy Physics - Phenomenology General Relativity and Quantum Cosmology High Energy Physics - Phenomenology (hep-ph) Orders of magnitude (time) Homogeneous space Gravitino High Energy Physics::Experiment media_common Astrophysics - Cosmology and Nongalactic Astrophysics |
| DOI: | 10.48550/arxiv.1310.5872 |
| Popis: | We study resonant gravitino production in the early Universe in the presence of SUSY flat directions whose large VEVs break some but not all gauge symmetries. We find that for a large region of parameter space the gravitino abundance is several orders of magnitude larger than the cosmological upper bound. Since flat directions with large VEVs are generically expected in supersymmetric theories this result further exacerbates the gravitino problem. Comment: 5 pages, matches the published version. Minor changes in the text; references added |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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