Spontaneous dark-matter mass generation along cosmological attractors in string theory
AffiliationUniv Arizona, Dept Phys
KeywordsCosmology of Theories beyond the SM
Superstrings and Heterotic Strings
MetadataShow full item record
CitationCoudarchet, T., Heurtier, L. & Partouche, H. J. High Energ. Phys. (2019) 2019: 117. https://doi.org/10.1007/JHEP03(2019)117
JournalJOURNAL OF HIGH ENERGY PHYSICS
Rights© The Author(s) 2019
Collection InformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at firstname.lastname@example.org.
AbstractWe propose a new scenario for generating a relic density of non-relativistic dark matter in the context of heterotic string theory. Contrary to standard thermal freeze-out scenarios, dark-matter particles are abundantly produced while still relativistic, and then decouple from the thermal bath due to the sudden increase of their mass above the universe temperature. This mass variation is sourced by the condensation of an order-parameter modulus, which is triggered when the temperature T (t) drops below the supersymmetry breaking scale M (t), which are both time-dependent. A cosmological attractor mechanism forces this phase transition to take place, in an explicit class of heterotic string models with spontaneously broken supersymmetry, and at finite temperature.
NoteOpen access journal
VersionFinal published version
SponsorsDepartment of Energy [DE-FG02-13ER41976/DE-SC0009913]; CNRS; Royal Society International Cost Share Award