Gravitational production of scalar dark matter
Sign Up to like & getrecommendations! Published in 2019 at "Journal of High Energy Physics"
DOI: 10.1007/jhep06(2020)084
Abstract: We investigate the gravitational production of scalar dark matter particles during the inflationary and reheating epochs. The oscillatory behavior of the curvature scalar R during the reheating phase generates two different enhancement mechanisms in the… read more here.
Keywords: dark matter; gravitational production; production; production scalar ... See more keywords
Principle of multiple point criticality in multi-scalar dark matter models
Sign Up to like & getrecommendations! Published in 2021 at "Nuclear Physics B"
DOI: 10.1016/j.nuclphysb.2021.115441
Abstract: Abstract The principle of multiple point criticality (PMPC), which allowed the prediction of the Higgs boson mass before its discovery, has so far been applied to radiatively generated vacua. If this principle is fundamental, following… read more here.
Keywords: matter; matter models; dark matter; multiple point ... See more keywords
Lightish but clumpy: scalar dark matter from inflationary fluctuations
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Cosmology and Astroparticle Physics"
DOI: 10.1088/1475-7516/2018/10/022
Abstract: It has recently been shown [1] that light vector particles produced from inflationary fluctuations can give rise to the dark matter in the Universe. A similar mechanism has been discussed in [2] for a non-minimally… read more here.
Keywords: lightish clumpy; matter; dark matter; inflationary fluctuations ... See more keywords
Gamma-ray signals from multicomponent scalar dark matter decays
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Cosmology and Astroparticle Physics"
DOI: 10.1088/1475-7516/2020/01/011
Abstract: Within a multicomponent dark matter scenario, novel gamma-ray signals may arise from the decay of the heavier dark matter component into the lighter. For a scalar dark sector of this kind, the decay $\phi_2\rightarrow\phi_1 \gamma$… read more here.
Keywords: matter; dark matter; gamma ray; scalar dark ... See more keywords
Two component singlet-triplet scalar dark matter and electroweak vacuum stability
Sign Up to like & getrecommendations! Published in 2021 at "Physical Review D"
DOI: 10.1103/physrevd.103.075001
Abstract: We propose a two component dark matter set-up by extending the Standard Model with a singlet and a hypercharge-less triplet scalars, each of them being odd under different $Z_2$ symmetries. We observe that the inter-conversion… read more here.
Keywords: dark matter; two component; electroweak vacuum; matter ... See more keywords
Scalar dark matter interpretation of the DAMPE data with U(1) gauge interactions
Sign Up to like & getrecommendations! Published in 2017 at "Physical Review D"
DOI: 10.1103/physrevd.97.095011
Abstract: Recently, the Dark Matter Particle Explorer (DAMPE) experiment released the new measurement of the total cosmic e(+) e(-) flux between 25 GeV and 4.6 TeV, which indicates a spectral softening at around 0.9 TeV and… read more here.
Keywords: gauge; matter; dark matter; matter interpretation ... See more keywords
Scalar dark matter probes the scale of nonlocality
Sign Up to like & getrecommendations! Published in 2019 at "International Journal of Modern Physics A"
DOI: 10.1142/s0217751x19501306
Abstract: Scalar dark matter (DM) in a theory introduces hierarchy problems, and suffers from the inability to predict the preferred mass range for the DM. In a WIMP-like minimal scalar DM setup we show that the… read more here.
Keywords: dark matter; scale nonlocality; formula see; scalar dark ... See more keywords