Results 71 to 80 of about 417,071 (324)
Cosmological perturbations engendered by discrete relativistic species
European Physical Journal C: Particles and Fields, 2023 Within the extension of the $$\varLambda $$ Λ CDM model, allowing for the presence of neutrinos or warm dark matter, we develop the analytical cosmological perturbation theory.
Maksym Brilenkov +2 more
doaj +1 more source
Warm and cold dark matter in a bouncing universe [PDF]
Physical Review D, 2020 14 pages, 4 ...
openaire +3 more sources
Sterile neutrinos as subdominant warm dark matter [PDF]
Physical Review D, 2007 In light of recent findings which seem to disfavor a scenario with (warm) dark matter entirely constituted of sterile neutrinos produced via the Dodelson-Widrow (DW) mechanism, we investigate the constraints attainable for this mechanism by relaxing the usual hypothesis that the relic neutrino abundance must necessarily account for all of the dark ...
Daniel T. Cumberbatch +3 more
openaire +3 more sources
Tunable Synthetic Hydrogel Modulates Hepatic Lineage Specification of Human Liver Organoid
Advanced Functional Materials, EarlyView.In this study, a synthetic hydrogel is reported that supports the formation of hiPSC‐derived human liver organoids (HLOs). Hepatic lineage specification can be modulated via conjugation of RGD peptide to hydrogel: RGD‐conjugated hydrogels promote cholangiocyte differentiation, whereas RGD‐free hydrogels favor hepatocyte commitment of HLO cells.
Lei Wang +16 more
wiley +1 more source
Cosmological relaxation from dark fermion production
Journal of High Energy Physics, 2020 We consider the cosmological relaxation solution to the electroweak hierarchy problem using the fermion production as a dominant friction force. In our approach, neither super-Planckian field excursions nor a large number of e-folds arise, and scanning ...
Kenji Kadota, Ui Min, Minho Son, Fang Ye
doaj +1 more source
New Bounds for the Mass of Warm Dark Matter Particles Using Results from Fermionic King Model
Universe, 2021 After reviewing several aspects about the thermodynamics of self-gravitating systems that undergo the evaporation (escape) of their constituents, some recent results obtained in the framework of fermionic King model are applied here to the analysis of ...
Luisberis Velazquez
doaj +1 more source
Fermionic partner of Quintessence field as candidate for dark matter
, 2004 Quintessence is a possible candidate for dark energy. In this paper we study the phenomenologies of the fermionic partner of Quintessence, the Quintessino.
A.G. Riess +36 more
core +1 more source
Biomass Native Structure Into Functional Carbon‐Based Catalysts for Fenton‐Like Reactions
Advanced Functional Materials, EarlyView.This study indicates that eight biomasses with 2D flaky and 1D acicular structures influence surface O types, morphology, defects, N doping, sp2 C, and Co nanoparticles loading in three series of carbon, N‐doped carbon, and cobalt/graphitic carbon. This work identifies how these structural factors impact catalytic pathways, enhancing selective electron
Wenjie Tian +7 more
wiley +1 more source
Conformal freeze-in, composite dark photon, and asymmetric reheating
Journal of High Energy Physics, 2023 Large classes of dark sector models feature mass scales and couplings very different from the ones we observe in the Standard Model (SM). Moreover, in the freeze-in mechanism, often employed by the dark sector models, it is also required that the dark ...
Wen Han Chiu +2 more
doaj +1 more source
Early galaxy formation in warm dark matter cosmologies [PDF]
, 2015 We present a framework for high-redshift ($z \geq 7$) galaxy formation that traces their dark matter (DM) and baryonic assembly in four cosmologies: Cold Dark Matter (CDM) and Warm Dark Matter (WDM) with particle masses of $m_x =$ 1.5, 3 and 5 ${\rm keV}$
Dayal, Pratika +2 more
core +1 more source