Non-Thermal Dark Matter and the Moduli Problem in String Frameworks

By B. Acharya, Piyush Kumar, Konstantin Bobkov, G. Kane, Jing Shao, S. Watson. 2008

202 citations recorded by the source corpus.

We address the cosmological moduli/gravitino problems and the issue of too little thermal but excessive non-thermal dark matter from the decays of moduli. The main examples we study are the G2-MSSM models arising from M theory compactifications, which allow for a precise calculation of moduli decay rates and widths. We find that the late decaying moduli satisfy both BBN constraints and avoid the gravitino problem. The non-thermal production of Wino LSPs, which is a prediction of G2-MSSM models, gives a relic density of about the right order of magnitude.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/b39df94d5eb3dd92cace9705f2bae7062292241c

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Citations in the corpus

WIMP dark matter candidates and searches—current status and future prospects (2017, background): “Examples include moduli field (see [82, 83] and references therein), Q-balls (see, e.”
An M theory solution to the strong CP-problem, and constraints on the axiverse (2010, background): “It was shown in [ 39 ] that both the moduli and gravitino problems can be naturally solved within this framework.”
The type IIB string axiverse and its low-energy phenomenology (2012, background): “In order to solve the CMP, these light moduli could be diluted either by the entropy released by the decay of some heavy moduli [26] or by a late time inflationary period caused by thermal effects [27].”
Cosmological Moduli and the Post-Inflationary Universe: A Critical Review (2015, methodology): “5 The case of non-thermal histories with multiple moduli was considered in [12].”
In wino veritas? Indirect searches shed light on neutralino dark matter (2013, background): “[72] computes the coefficient and finds c = 8π and 16π for two different moduli fields, more consistent with the upper end of our range of c values.”