Zobrazeno 1 - 10
of 53
pro vyhledávání: '"nucleosynthesis: big bang"'
Conventional scenarios of purely gravitationally produced dark matter with masses below the Hubble parameter at the end of inflation are in tension with Cosmic Microwave Background (CMB) constraints on the isocurvature power spectrum. We explore a mo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::685d2fe922a10a721818906990ff4018
http://arxiv.org/abs/2305.14446
http://arxiv.org/abs/2305.14446
Publikováno v:
Journal of high energy physics 2023(3), 104 (2023). doi:10.1007/JHEP03(2023)104
Journal of High Energy Physics
Journal of High Energy Physics
Journal of high energy physics 2023(3), 104 (2023). doi:10.1007/JHEP03(2023)104
Ultralight dark matter is a compelling dark matter candidate. In this work, we examine the impact of quadratically-coupled ultralight dark matter on the predictions
Ultralight dark matter is a compelling dark matter candidate. In this work, we examine the impact of quadratically-coupled ultralight dark matter on the predictions
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d73a4698c2fae1a399d5ed1d124b4756
https://bib-pubdb1.desy.de/record/582393
https://bib-pubdb1.desy.de/record/582393
Autor:
Schmidt-Hoberg, Kai, Depta, Paul Frederik, Konstandin, Thomas, Tasillo, Carlo, Bringmann, Torsten
Gravitational waves from a first-order cosmological phase transition, at temper-atures at the MeV-scale, would arguably be the most exciting explanation of the commonred spectrum reported by the NANOGrav collaboration, not the least because this woul
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ce058a2b377b65039a70fa5d9d427fac
Autor:
Garcia, Marcos A. G., Pierre, Mathias
In the presence of self-interactions, the post-inflationary evolution of the inflaton field is driven into the non-linear regime by the resonant growth of its fluctuations. The once spatially homogeneous coherent inflaton is converted into a collecti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9bac8a0afec0857928d39f2e68f38c5a
Publikováno v:
Physical Review
We consider multi-component dark matter in a model where one dark matter component is feebly interacting (FIMP) while the second is weakly interacting (WIMP). The model contains an inert scalar doublet and a complex scalar singlet and features a disc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::346d6e445f7d5ca21f7eeabfea49b1a0
http://repo.scoap3.org/api
http://repo.scoap3.org/api
Ultralight dark matter is a compelling dark matter candidate. In this work, we examine the impact of quadratically-coupled ultralight dark matter on the predictions of Big Bang Nucleosynthesis. The presence of ultralight dark matter can modify the ef
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f40689e4f89d97d8a067e6fbfc02289a
Autor:
Arnab Chaudhuri, Maxim Yu. Khlopov
Publikováno v:
Int.J.Mod.Phys.D
Int.J.Mod.Phys.D, 2021, 30 (16), pp.2140008. ⟨10.1142/S0218271821400083⟩
Int.J.Mod.Phys.D, 2021, 30 (16), pp.2140008. ⟨10.1142/S0218271821400083⟩
When the vacuum like energy of the Higgs potential within the standard model undergoes electroweak phase transition, an influx of entropy into the primordial plasma can lead to a significant dilution of frozen out dark matter density that was already
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6a3e17363be86b2e83bfecbb57765374
https://hal.archives-ouvertes.fr/hal-03424535
https://hal.archives-ouvertes.fr/hal-03424535
Publikováno v:
Physical Review D
Physical Review D, American Physical Society, 2021, 103 (12), pp.123549. ⟨10.1103/PhysRevD.103.123549⟩
Physical Review D, American Physical Society, 2021, 103 (12), pp.123549. ⟨10.1103/PhysRevD.103.123549⟩
We present precision calculations of dark radiation in the form of gravitons coming from Hawking evaporation of spinning primordial black holes (PBHs) in the early Universe. Our calculation incorporates a careful treatment of extended spin distributi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::66b7eaca629ece858ec0d537a002d564
http://cds.cern.ch/record/2764308
http://cds.cern.ch/record/2764308
Massive sterile neutrinos in the early universe: From thermal decoupling to cosmological constraints
Publikováno v:
Physical Review D
Physical Review D, American Physical Society, 2021, 104 (1), pp.016026. ⟨10.1103/PhysRevD.104.016026⟩
Physical Review
Physical Review D, American Physical Society, 2021, 104 (1), pp.016026. ⟨10.1103/PhysRevD.104.016026⟩
Physical Review
We consider relatively heavy neutrinos $\nu_H$, mostly contributing to a sterile state $\nu_s$, with mass in the range 10 MeV $\lesssim m_s \lesssim m_{\pi} \sim 135$ MeV, which are thermally produced in the early universe in collisional processes in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f925069ce53bf9dc6b2fc062b002839e
Publikováno v:
Journal of cosmology and astroparticle physics 04(04), 011 (2021). doi:10.1088/1475-7516/2021/04/011
Journal of cosmology and astroparticle physics 04(04), 011 (2021). doi:10.1088/1475-7516/2021/04/011
In this work, we revise and update model-independent constraints from Big Bang Nucleosynthesis on MeV-scale particles �� which decay into ph
In this work, we revise and update model-independent constraints from Big Bang Nucleosynthesis on MeV-scale particles �� which decay into ph
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::72c34a014e3a9f06250a4deaab432d3e
https://bib-pubdb1.desy.de/record/473969
https://bib-pubdb1.desy.de/record/473969