Zobrazeno 1 - 10
of 79
pro vyhledávání: '"Yvonne Y. Y. Wong"'
Autor:
Meera Deshpande, Jan Hamann, Dipan Sengupta, Martin White, Anthony G. Williams, Yvonne Y. Y. Wong
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 84, Iss 7, Pp 1-22 (2024)
Abstract SuperWIMPs are extremely weakly interacting massive particles that inherit their relic abundance from late decays of frozen-out parent particles. Within supersymmetric models, gravitinos and axinos represent two of the most well motivated su
Externí odkaz:
https://doaj.org/article/c9a116eba50947139b1eaca9efece5a5
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 82, Iss 7, Pp 1-22 (2022)
Abstract We consider invisible neutrino decay $$\nu _H \rightarrow \nu _l + \phi $$ ν H → ν l + ϕ in the ultra-relativistic limit and compute the neutrino anisotropy loss rate relevant for the cosmic microwave background (CMB) anisotropies. Impr
Externí odkaz:
https://doaj.org/article/e87a7dbfd49e40ac99a88bce7fb3222a
Publikováno v:
Zaguán. Repositorio Digital de la Universidad de Zaragoza
instname
Physical Review
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Physical Review
Axions and axion-like particles (ALPs) are some of the most popular candidates for dark matter, with several viable production scenarios that make different predictions. In the scenario in which the axion is born after inflation, its field develops s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::77986c2e69c7a02994b6f1d80562ae87
http://zaguan.unizar.es/record/117206
http://zaguan.unizar.es/record/117206
Autor:
Yvonne Y. Y. Wong
Publikováno v:
Indonesian Journal of International Law. 8
Odious sovereign contracts inhibit developing country growth. They cause money and resources to be improperly transferred from one country to an undeserving one. Think tanks and civil society actors have long suggested that Indonesia is plagued by a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f5908f57db19da901a0a0f5eb0aec6e8
https://doi.org/10.17304/ijil.vol8.1.254
https://doi.org/10.17304/ijil.vol8.1.254
Autor:
Julia Stadler, Markus R. Mosbech, Yvonne Y. Y. Wong, Steen Hannestad, Celine Boehm, Olga Mena
Publikováno v:
Mosbech, M R, Boehm, C, Hannestad, S, Mena, O, Stadler, J & Wong, Y Y Y 2021, ' The full Boltzmann hierarchy for dark matter-massive neutrino interactions ', Journal of Cosmology and Astroparticle Physics, vol. 2021, no. 3, 066 . https://doi.org/10.1088/1475-7516/2021/03/066
The impact of dark matter-neutrino interactions on the measurement of the cosmological parameters has been investigated in the past in the context of massless neutrinos exclusively. Here we revisit the role of a neutrino-dark matter coupling in light
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::20ae3b9f0a9ece368563fc3be2097b14
https://pure.au.dk/portal/da/publications/the-full-boltzmann-hierarchy-for-dark-mattermassive-neutrino-interactions(52836f8f-1135-4166-995f-53fc27ac770d).html
https://pure.au.dk/portal/da/publications/the-full-boltzmann-hierarchy-for-dark-mattermassive-neutrino-interactions(52836f8f-1135-4166-995f-53fc27ac770d).html
Autor:
Pablo F. de Salas, Jack J. Bennett, Marco Drewes, Yvonne Y. Y. Wong, Gilles Buldgen, Stefano Gariazzo, Sergio Pastor
Publikováno v:
Bennett, Jack J. Buldgen, Gilles Fernández de Salas, Pablo Drewes, Marco Gariazzo, Stefano Pastor Carpi, Sergio Wong, Yvonne Y.Y. 2021 Towards a precision calculation of the effective number of neutrinos 𝖭_𝖾𝖿𝖿 in the Standard Model. Part II. Neutrino decoupling in the presence of flavour oscillations and finite-temperature QED Journal Of Cosmology And Astroparticle Physics 04 073 073-1 073-31
RODERIC. Repositorio Institucional de la Universitat de Valéncia
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RODERIC. Repositorio Institucional de la Universitat de Valéncia
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We present in this work a new calculation of the standard-model benchmark value for the effective number of neutrinos, Neff SM, that quantifies the cosmological neutrino-to-photon energy densities. The calculation takes into account neutrino flavour
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cf1ee81db1422bcaf10157ee3e6e27ff
https://doi.org/10.1088/1475-7516/2021/04/073
https://doi.org/10.1088/1475-7516/2021/04/073
Publikováno v:
Hannestad, S, Upadhye, A & Wong, Y Y Y 2020, ' Spoon or slide? The non-linear matter power spectrum in the presence of massive neutrinos ', Journal of Cosmology and Astroparticle Physics, vol. 2020, no. 11, 062 . https://doi.org/10.1088/1475-7516/2020/11/062
Numerical simulations of massive neutrino cosmologies consistently find a spoon-like feature in the non-linear matter power spectrum ratios of cosmological models that differ only in the neutrino mass fraction f_N. Typically, the ratio approaches uni
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::767d8296e1a269d05b67fcf909fe3d6b
http://arxiv.org/abs/2006.04995
http://arxiv.org/abs/2006.04995
A significant challenge for modelling the massive neutrino as a hot dark matter is its large velocity dispersion. In this work, we investigate and implement a multi-fluid perturbation theory that treats the cosmic neutrino population as a collection
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0b373c2545e482c4b2062cd5ca2d80f9
We revisit several aspects of Standard Model physics at finite temperature that drive the theoretical value of the cosmological parameter $N_{\rm eff}$, the effective number of neutrinos in the early universe, away from 3. Our chief focus is finite-t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6c76d96696787225eb224d7d1420cb3e
http://arxiv.org/abs/1911.04504
http://arxiv.org/abs/1911.04504
Publikováno v:
Journal of Cosmology and Astroparticle Physics. 2021:078
We present in this work a novel and yet extremely simple method for incorporating the effects of massive neutrinos in cosmological $N$-body simulations. This so-called "SuperEasy linear response" approach is based upon analytical solutions to the col
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2215c8928543c115e5bd2748cf8c0c67
https://doi.org/10.1088/1475-7516/2021/04/078
https://doi.org/10.1088/1475-7516/2021/04/078