Gauge-invariant inflaton in the minimal supersymmetric standard model

Allahverdi, Rouzbeh and Enqvist, Kari and Garcia-Bellido, Juan and Mazumdar, Anupam (2006) Gauge-invariant inflaton in the minimal supersymmetric standard model. Physical review letters, 97 (19): 191304. ISSN 1079-7114

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We argue that all the necessary ingredients for successful inflation are present in the flat directions of the Minimally Supersymmetric Standard Model. We show that out of many gauge invariant combinations of squarks, sleptons and Higgses, there are two directions, ${\bf LLe}$, and ${\bf udd}$, which are promising candidates for the inflaton. The model predicts more than $10^3$ e-foldings with an inflationary scale of $H_{\rm inf}\sim {\cal O}(1-10)$ GeV, provides a tilted spectrum with an amplitude of $\delta_H\sim 10^{-5}$ and a negligible tensor perturbation. The temperature of the thermalized plasma could be as low as $T_{rh}\sim {\cal O}(1-10)$~TeV. Parts of the inflaton potential can be determined independently of cosmology by future particle physics experiments.

Item Type:
Journal Article
Journal or Publication Title:
Physical review letters
Additional Information:
© 2006 The American Physical Society 4 revtex pages, some references added, stabilization of moduli and supergravity effects are discussed
Uncontrolled Keywords:
?? physics and astronomy(all) ??
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Deposited On:
01 May 2013 08:51
Last Modified:
20 Mar 2024 00:32