TY - JOUR
T1 - How to best reconcile big bang nucleosynthesis with Li abundance determinations?
T2 - Lithium in the Cosmos
AU - Olive, Keith A.
N1 - Publisher Copyright:
© SAIt 2012.
Copyright:
Copyright 2015 Elsevier B.V., All rights reserved.
PY - 2012
Y1 - 2012
N2 - Non-standard model solutions to the 7Li problem are discussed. Particular attention is given to the possibility of a relatively long lived gravitino decay affecting the light element abundances. Gravitinos with masses between 4-5 TeV could significantly reduce the final 7Li abundance. Alternatively, a possible variation in the fundamental constants may also affect the 7Li abundance. In both cases, reduced 7Li is accompanied by an increased D/H abundance. This may have implications for the chemical evolution in quasar absorption systems.
AB - Non-standard model solutions to the 7Li problem are discussed. Particular attention is given to the possibility of a relatively long lived gravitino decay affecting the light element abundances. Gravitinos with masses between 4-5 TeV could significantly reduce the final 7Li abundance. Alternatively, a possible variation in the fundamental constants may also affect the 7Li abundance. In both cases, reduced 7Li is accompanied by an increased D/H abundance. This may have implications for the chemical evolution in quasar absorption systems.
KW - Big bang nucleosynthesis
KW - Fundamental constants
KW - Supersymmetry
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M3 - Conference article
AN - SCOPUS:84922417375
VL - 22
SP - 197
EP - 206
JO - Memorie della Societa Astronomica Italiana, Supplementi - Journal of the Italian Astronomical Society, Supplement
JF - Memorie della Societa Astronomica Italiana, Supplementi - Journal of the Italian Astronomical Society, Supplement
SN - 1824-0178
Y2 - 27 February 2012 through 29 February 2012
ER -