Hiding an elephant: heavy sterile neutrino with large mixing angle does not contradict cosmology
نویسندگان
چکیده
منابع مشابه
Realistic sterile neutrino dark matter with keV mass does not contradict cosmological bounds.
Previous fits of sterile neutrino dark matter (DM) models to cosmological data ruled out masses smaller than approximately 8 keV, assuming a production mechanism that is not the best motivated from a particle physics point of view. Here we focus on a realistic extension of the standard model with three sterile neutrinos, consistent with neutrino oscillation data and baryogenesis, with the light...
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Based on transformation optics, we propose an illusion device that can make objects look much smaller and different than they actually are. In particular, the device has a capability to hide a large object (like an elephant) into a small one (like a matchbox). Compared to previous proposals for illusion devices, there is no requirement for negative refractive index or for spee...
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ژورنال
عنوان ژورنال: Journal of Cosmology and Astroparticle Physics
سال: 2017
ISSN: 1475-7516
DOI: 10.1088/1475-7516/2017/06/051