Molecular Chemistry for Dark Matter

Abstract

Molecular cooling is essential for studying the formation of sub-structure of dissipative dark-matter halos that may host compact objects such as black holes. Here, we analyze the reaction rates relevant for the formation, dissociation, and transition of hydrogenic molecules while allowing for different values of the physical parameters: the coupling constant, the proton mass, and the electron mass. For all cases, we re-scale the reaction rates for the standard molecular hydrogen, so our results are valid as long as the dark matter is weakly coupled and one of the fermions is much heavier than the other. These results will allow a robust numerical treatment of cosmic structure, in particular for mini-halos for which molecular cooling is important, in a dissipative dark matter scenario.

arXiv comment30 pages, 5 figures. Updated with changes for published version

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Cited by in corpus (8)

• A Lower Bound on the Mass of Compact Objects from Dissipative Dark Matter
• Molecular Chemistry for Dark Matter II: Recombination, Molecule Formation, and Halo Mass Function in Atomic Dark Matter
• Molecular Chemistry for Dark Matter III: DarkKROME
• Dark Black Holes in the Mass Gap
• Baryogenesis through Asymmetric Reheating in the Mirror Twin Higgs
• The Effect of Multiple Cooling Channels on the Formation of Dark Compact Objects
• Cool dark sector, concordance, and a low ${\sigma }_8$
• Towards a theory of dissipative Dark Matter I: the Born limit