Nucleosynthesis bounds on a time varying cosmological 'constant' - INSPIRE

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Nucleosynthesis bounds on a time varying cosmological 'constant'

Michael Birkel
(
- Oxford U.
)
,
Subir Sarkar
(
- Oxford U.
)

May, 1996

11 pages

Published in:

Astropart.Phys. 6 (1997) 197-204

e-Print:

astro-ph/9605055 [astro-ph]

DOI:

10.1016/S0927-6505(96)00054-0

Report number:

OUTP-96-16-P

View in:

ADS Abstract Service

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Abstract: (arXiv)

We constrain proposed phenomenological models for a vacuum energy which decays with the expansion of the universe from considerations of standard big bang nucleosynthesis. Several models which are simple enough to be physically appealing are ruled out.

Note:

11 pages LaTeX (uses ReVTeX), including 3 encapsulated PostScript figures (uses epsf); Full paper (including figures) available at ftp://ftp.physics.ox.ac.uk/pub/local/users/sarkar/Lambdat.ps.gz Report-no: OUTP-96-16P

cosmological constant
fundamental constant: time dependence
light nucleus: production
vacuum state: decay
vacuum state: energy
neutrino: temperature
numerical calculations

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