2021
DOI: 10.1007/jhep11(2021)162
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Neutrino interactions in the late universe

Abstract: The cosmic neutrino background is both a dramatic prediction of the hot Big Bang and a compelling target for current and future observations. The impact of relativistic neutrinos in the early universe has been observed at high significance in a number of cosmological probes. In addition, the non-zero mass of neutrinos alters the growth of structure at late times, and this signature is a target for a number of upcoming surveys. These measurements are sensitive to the physics of the neutrino and could be used to… Show more

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Cited by 15 publications
(10 citation statements)
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References 64 publications
(107 reference statements)
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“…figure 3). 16 Hence, for points below the orange line, χ cannot account for all of DM, and we instead assume that the remaining abundance is accounted for by standard cold DM. Also, in our analysis, we explicitly set N ν = 1 unlike before, as PTOLEMY is only sensitive to electron neutrinos.…”
Section: Detection Prospects With Ptolemymentioning
confidence: 99%
See 1 more Smart Citation
“…figure 3). 16 Hence, for points below the orange line, χ cannot account for all of DM, and we instead assume that the remaining abundance is accounted for by standard cold DM. Also, in our analysis, we explicitly set N ν = 1 unlike before, as PTOLEMY is only sensitive to electron neutrinos.…”
Section: Detection Prospects With Ptolemymentioning
confidence: 99%
“…Since both neutrinos and dark matter (DM) are two of the most compelling pieces of evidence for new physics beyond the Standard Model (BSM), it is conceivable that both particles are indeed connected and thus feature non-trivial interactions among each other. Such a scenario could then potentially induce noticeable changes to the evolution of the Universe [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18], as DM-neutrino interactions are capable of changing the anisotropies in the cosmic microwave background (CMB) [1,3,12,13], modifying big bang nucleosynthesis (BBN) [10,11], and/or affecting structure formation at small scales [2,4]. Additionally, one might ask the question if interactions between DM and neutrinos could also be responsible for setting the correct relic abundance, e.g.…”
Section: Introductionmentioning
confidence: 99%
“…Similarly, models in which a fraction of the dark matter acquires a large velocity after recombination (e.g. via DM-neutrino scattering [92]) will lead to a suppression of clustering in a manner similar to that described above. Despite the different physical mechanism, the observable consequences for cosmology are also similar to a change to 𝑚 𝜈 [91].…”
Section: Relation To Neutrino Massmentioning
confidence: 78%
“…In particular, neutrino interactions with new and very light bosons have been actively explored, with considerations covering e.g. oscillation phenomena [1][2][3][4][5][6] and various astrophysical and cosmological consequences [7][8][9][10][11][12]. Yet another possible consequence of this interaction (the subject of this paper) is the formation of bound states and bound systems of neutrinos.…”
Section: Introductionmentioning
confidence: 99%