Self-Interacting Dark Matter with Naturally Light Mediator

Abstract

A promising proposal for resolving the cusp-core anomaly in the density profile of dwarf galaxies is to allow dark matter to interact with itself through a light mediator of mass much less than a GeV. The theoretical challenge is to have a complete renormalizable theory where this happens naturally even though dark matter itself may be of the electroweak scale, i.e. 100 GeV to 1 TeV. I propose here such a model, with just two neutral complex scalar singlets under a softly broken dark global U(1) symmetry.

arXiv comment11 pages, 5 figures (discussion added)

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Cited by in corpus (7)

• Dark Matter Self-interactions and Small Scale Structure
• Observable tests of self-interacting dark matter in galaxy clusters: cosmological simulations with SIDM and baryons
• Dark matter self-interactions from a general spin-0 mediator
• Pseudo-Majoron as Light Mediator of Singlet Scalar Dark Matter
• Displaced Lepton Jet Signatures from Self-Interacting Dark Matter Bound States
• Light dark matter in a minimal extension with two additional real singlets
• Leptonic Dark Matter with Scalar Dilepton Mediator