The Sterile Neutrino: A short introduction

Naumov, D.

doi:10.1051/epjconf/201920704004

Cited by 12 publications

(6 citation statements)

References 33 publications

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“…Obviously this solves several problems in modern cosmology, for example the question why accelerated expansion occurs just now when structure is getting established. Unknown yet is whether it might explain the discrepancy between H 0 in the early and late Universe (Planck Collaboration, 2018a; Riess et al, 2019), and what its relation is to the much discussed sterile neutrino (for an introduction see Naumov, 2019). The main difference between these two hypothetical particles seems to be that the sterile neutrino is predicted but may be not observable, while the fertile neutrino is observed (we have seen it in our dreams) but may be not predictable.…”

Section: Analysis and Properties Of The Fertile Neutrinomentioning

confidence: 80%

Conspiratorial cosmology. II. The anthropogenic principle

Rachen¹,

Gahlings²

2020

Preprint

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We revisit our 2013 claim that the Universe is the result of a conspiratorial plot, and find that it cannot be trusted, because even the belief in this conspiracy likely results from a conspiracy. On the basis of mathematical beauty, the final results of the Planck mission, the exploration of the dark sector by means of occult rituals and symbols, and a powerful new philosophical approach to physics, we demonstrate here that not only the existence of our Universe but the whole concept of reality has to be rejected as obsolete and generally misleading. By introducing the new concept of the "anthropogenic principle", we eventually illuminate the darkest corners of the conspiracy behind the conspiracy and briefly discuss some important implications regarding the survival of wo*mankind.

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Section: Analysis and Properties Of The Fertile Neutrinomentioning

confidence: 80%

Conspiratorial cosmology. II. The anthropogenic principle

Rachen¹,

Gahlings²

2020

Preprint

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“…The existence of this particle is motivated by arguments on the chirality of fermions and on the possibility to explain in a natural way the small active neutrino masses through the seesaw mechanism (e.g., [79,80]). The sterile neutrino in the keV mass range (e.g., [76,81]) is a DM particle candidate able to overcome the problems at small scales of the CDM scenario ( [82], for a review: [77]). It is classified as warm dark matter (WDM) particle and can be created in the early Universe ( [83][84][85]); it decouples from the cosmological plasma when still mildly relativistic.…”

Section: Sterile Neutrino: Warm Dark Matter Particlementioning

confidence: 99%

Fundamental Properties of the Dark and the Luminous Matter from the Low Surface Brightness Discs

Salucci

Paolo

2021

Universe

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Dark matter (DM) is one of the biggest mystery in the Universe. In this review, we start reporting the evidences for this elusive component and discussing about the proposed particle candidates and scenarios for such phenomenon. Then, we focus on recent results obtained for rotating disc galaxies, in particular for low surface brightness (LSB) galaxies. The main observational properties related to the baryonic matter in LSBs, investigated over the last decades, are briefly recalled. Next, these galaxies are analyzed by means of the mass modelling of their rotation curves both individual and stacked. The latter analysis, via the universal rotation curve (URC) method, results really powerful in giving a global or universal description of the properties of these objects. We report the presence in LSBs of scaling relations among their structural properties that result comparable with those found in galaxies of different morphologies. All this confirms, in disc systems, the existence of a strong entanglement between the luminous matter (LM) and the dark matter (DM). Moreover, we report how in LSBs the tight relationship between their radial gravitational accelerations g and their baryonic components gb results to depend also on the stellar disk length scale and the radius at which the two accelerations have been measured. LSB galaxies strongly challenge the ΛCDM scenario with the relative collisionless dark particle and, alongside with the non-detection of the latter, contribute to guide us towards a new scenario for the DM phenomenon.

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“…We also assumed the neutrinos were Dirac neutrinos rather than Majorana neutrinos. In addition, recent experiments and cosmological observations hint at the possibility of sterile neutrinos which would also impact the 2NEP [52]. The 2NEP is interesting because it probes fundamental issues of neutrino physics such as the neutrino mass and mixing, the number of neutrinos, the type of neutrino (Dirac or Majorana), CP -violation, the neutrino vacuum state, while producing a result, an interaction potential, that is familiar to an introductory physics student.…”

Section: Summary and Future Directionsmentioning

confidence: 99%

Spin-independent two-neutrino exchange potential with mixing and CP violation

Thien

Krause

2019

Phys. Rev. D

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We develop a new approach for calculating the spin-independent two-neutrino exchange potential (2NEP) between nonrelativistic fermions which places emphasis on the neutrino vacuum state, an area of theoretical interest in recent years. The 2NEP is a natural probe of fundamental issues of neutrino physics such as neutrino masses, flavor mixing, the number of neutrino flavors, neutrino nature (Dirac or Majorana), CP -violation, and the neutrino vacuum state. We explore the dependence of the 2NEP on the mixing of neutrino mass states assuming normal and inverted mass ordering for nucleon-nucleon, nucleon-lepton, and lepton-lepton interactions, and the CP -violation phase in the neutrino mixing matrix.

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The Sterile Neutrino: A short introduction

Cited by 12 publications

References 33 publications

Conspiratorial cosmology. II. The anthropogenic principle

Conspiratorial cosmology. II. The anthropogenic principle

Fundamental Properties of the Dark and the Luminous Matter from the Low Surface Brightness Discs

Spin-independent two-neutrino exchange potential with mixing and CP violation

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