Results 11 to 20 of about 21,366 (192)
Chaotic Amplification of Neutrino Chemical Potentials by Neutrino Oscillations in Big Bang Nucleosynthesis [PDF]
, 1996 We investigate in detail the parameter space of active-sterile neutrino oscillations that amplifies neutrino chemical potentials at the epoch of Big Bang Nucleosynthesis.
A. Balysh +27 more
core +4 more sources
Big Bang Nucleosynthesis Constraints on f (T, TG) Gravity [PDF]
Universe, 2022 We confront f(T,TG) gravity, with big bang nucleosynthesis (BBN) requirements. The former is obtained using both the torsion scalar, as well as the teleparallel equivalent of the Gauss–Bonnet term, in the Lagrangian, resulting to modified Friedmann ...
Petros Asimakis +3 more
doaj +2 more sources
Neutrinos and Big Bang Nucleosynthesis [PDF]
Advances in High Energy Physics, 2012 According to the standard models of particle physics and cosmology, there should be a background of cosmic neutrinos in the present Universe, similar to the cosmic microwave photon background.
Gary Steigman
doaj +5 more sources
The Neutron Mean Life and Big Bang Nucleosynthesis [PDF]
Universe, 2023 We explore the effect of neutron lifetime and its uncertainty on standard big bang nucleosynthesis (BBN). BBN describes the cosmic production of the light nuclides, 1H, D, 3H+3He, 4He, and 7Li+7Be, in the first minutes of cosmic time.
Tsung-Han Yeh +2 more
doaj +2 more sources
Constraining f(T) teleparallel gravity by big bang nucleosynthesis [PDF]
European Physical Journal C: Particles and Fields, 2017 We use Big Bang Nucleosynthesis (BBN) observational data on the primordial abundance of light elements to constrain f(T) gravity. The three most studied viable f(T) models, namely the power law, the exponential and the square-root exponential are ...
S. Capozziello +2 more
doaj +2 more sources
Neutrinos and Big-Bang Nucleosynthesis [PDF]
, 1998 Observations of clusters and super clusters of galaxies have indicated that the Universe is more dominated by baryons than ever estimated in the homogeneous cosmological model for primordial nucleosynthesis.
Alcock +13 more
core +4 more sources
Effects of a torsion field on Big Bang nucleosynthesis [PDF]
, 1999 In this paper it is investigated whether torsion, which arises naturally in most theories of quantum gravity, has observable implications for the Big Bang nucleosynthesis.
C. N. Yang +18 more
core +2 more sources
Revised Uncertainties in Big Bang Nucleosynthesis [PDF]
, 2017 Big Bang Nucleosynthesis (BBN) explores the first few minutes of nuclei formation after the Big Bang. We present updates that result in new constraints at the 2{\sigma} level for the abundances of the four primary light nuclides - D,3He,4He, and 7Li - in
Foley, Michael +3 more
core +2 more sources
Compatibility of big bang nucleosynthesis in some modified gravities
European Physical Journal C: Particles and Fields, 2022 This paper is devoted to investigate the implications of Einstein-Aether and modified Hořava–Lifshitz theories of gravity to the formation of light elements in the early universe named as big bang nucleosynthesis.
Abdul Malik Sultan, Abdul Jawad
doaj +1 more source
Annalen der Physik, Volume 535, Issue 12, December 2023., 2023 This article describes the implementation of low‐frequency axion haloscope setups inside the future BabyIAXO magnet. The RADES proposal has a potential sensitivity to the axion‐photon coupling down to values corresponding to the KSVZ model, in the mass range between 1 and 2 μ$\umu$eV.
Saiyd Ahyoune +29 more
wiley +1 more source