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Review

Naturally-Coupled Dark Sectors

Faculty of Engineering and Natural Sciences, Sabancı University, Tuzla, İstanbul 34956, Turkey
Academic Editor: Orlando Luongo
Galaxies 2021, 9(2), 33; https://doi.org/10.3390/galaxies9020033
Received: 9 April 2021 / Revised: 7 May 2021 / Accepted: 10 May 2021 / Published: 12 May 2021
The dark sector, composed of fields that are neutral under the standard model (SM) gauge group, can couple to the SM through the Higgs, hypercharge and neutrino portals, and pull the SM towards its scale by loop corrections. This instability, which is not possible to prevent in the known SM completions, such as supersymmetry, due to the sizable couplings to the SM, calls for alternative mechanisms that can neutralize sensitivities of the SM to the dark sector scale and to the ultraviolet cutoff above it. Here we review such a mechanism in which incorporation of gravity into the SM predicts the existence of a dark sector and allows it to be naturally coupled to the SM. We discuss and illustrate salient processes that can probe the naturally coupled dark sectors. View Full-Text
Keywords: hierarchy problem; naturally coupled dark sector; emergent gravity hierarchy problem; naturally coupled dark sector; emergent gravity
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MDPI and ACS Style

Demir, D. Naturally-Coupled Dark Sectors. Galaxies 2021, 9, 33. https://doi.org/10.3390/galaxies9020033

AMA Style

Demir D. Naturally-Coupled Dark Sectors. Galaxies. 2021; 9(2):33. https://doi.org/10.3390/galaxies9020033

Chicago/Turabian Style

Demir, Durmuş. 2021. "Naturally-Coupled Dark Sectors" Galaxies 9, no. 2: 33. https://doi.org/10.3390/galaxies9020033

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