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Big Bang Nucleosynthesis and Related Observations [PDF]

, 2000
The current status of big bang nucleosynthesis is summarized. Particular attention is paid to recent observations of He4 and Li7 and their systematic uncertainties. Be and B are also discussed in connection to recent Li7 observations and the primordial Li7 abundance.
Keith A. Olive
openalex   +5 more sources

THE ²H(alpha, gamma)⁶LI REACTION AT LUNA AND BIG BANG NUCLEOSYNTHETIS

Acta Polytechnica, 2013
The 2H(α, γ)6Li reaction is the leading process for the production of 6Li in standard Big Bang Nucleosynthesis. Recent observations of lithium abundance in metal-poor halo stars suggest that there might be a 6Li plateau, similar to the well-known Spite ...
Carlo Gustavino
doaj   +1 more source

Big Bang Nucleosynthesis and Neutrinos [PDF]

, 2004
We present a brief review of Big Bang Nucleosynthesis (BBN). We discuss theoretical and observational uncertainties in deuterium and helium-4 primordial abundances and their implications for the determination of important cosmological parameters. We present, moreover, some recent results on active-sterile neutrino oscillations in the early universe and
VILLANTE, FRANCESCO LORENZO, Dolgov A. D.   +1 more
openaire   +4 more sources

The violent Universe: the Big Bang [PDF]

, 2010
Four lectures on Big Bang cosmology, including microwave background radiation, Big Bang nucleosynthesis, dark matter, inflation, and baryogenesis.Comment: 47 pages, 19 figures, Set of four lectures given at the 2009 European School of High-Energy ...
Olive, Keith A.
core   +1 more source

My Name Is Forrest Mozer

, 2022
Perspectives of Earth and Space Scientists, Volume 3, Issue 1, December 2022.
Forrest Mozer
wiley   +1 more source

Does the CMB prefer a leptonic Universe?

New Journal of Physics, 2013
Recent observations of the cosmic microwave background at smallest angular scales and updated abundances of primordial elements indicate an increase of the energy density and the helium-4 abundance with respect to standard big bang nucleosynthesis with ...
Dominik J Schwarz, Maik Stuke
doaj   +1 more source

Big Bang Nucleosynthesis Constraints on f (T, T_G) Gravity

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, Emmanuel N. Saridakis, Spyros Basilakos, Kuralay Yesmakhanova   +3 more
doaj   +1 more source

Experimental studies on astrophysical reactions at the low-energy RI beam separator CRIB [PDF]

EPJ Web of Conferences, 2022
Experimental studies on astrophysical reactions involving radioactive isotopes (RI) often accompany technical challenges. Studies on such nuclear reactions have been conducted at the low-energy RI beam separator CRIB, operated by Center for Nuclear Study,
Yamaguchi H., Hayakawa S., Ma N.R., Shimizu H., Okawa K., Yang L., Kahl D., La Cognata M., Lamia L., Abe K., Beliuskina O., Cha S.M., Chae K.Y., Cherubini S., Figuera P., Ge Z., Gulino M., Hu J., Inoue A., Iwasa N., Kim A., Kim D., Kiss G., Kubono S., La Commara M., Lattuada M., Lee E.J., Moon J.Y., Palmerini S., Parascandolo C., Park S.Y., Phong V. H., Pierroutsakou D., Pizzone R.G., Rapisarda G.G., Romano S., Spitaleri C., Tang X.D., Trippella O., Tumino A., Zhang N.T., Lam Y.H., Heger A., Jacobs A.M., Xu S.W., Ma S.B., Ru L.H., Liu E.Q., Liu T., Hamill C.B., St J. Murphy A., Su J., Fang X., Kwag M.S., Duy N.N., Uyen N.K., Kim D.H., Liang J, Psaltis A., Sferrazza M., Johnston Z., Li Y.Y.   +61 more
doaj   +1 more source

Non-universal scalar-tensor theories and big bang nucleosynthesis [PDF]

, 2008
We investigate the constraints that can be set from big-bang nucleosynthesis on two classes of models: extended quintessence and scalar-tensor theories of gravity in which the equivalence principle between standard matter and dark matter is violated.
Alain Coc, B. D. Fields, C. Will, C. M. Will, Elisabeth Vangioni, I. I. Shapiro, J.-P. Uzan, J. D. Barrow, J. D. Barrow, Jean-Philippe Uzan, K. Arai, Keith A. Olive, M. Fierz   +12 more
core   +3 more sources

Big bang nucleosynthesis in the new cosmology [PDF]

AIP Conference Proceedings, 2006
Big bang nucleosynthesis (BBN) describes the production of the lightest elements in the first minutes of cosmic time. We review the physics of cosmological element production, and the observations of the primordial element abundances. The comparison between theory and observation has heretofore provided our earliest probe of the universe, and given the
Brian D. Fields
openalex   +5 more sources