Physics
Scientific paper
Nov 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999phdt........10h&link_type=abstract
Thesis (PhD). UNIVERSITY OF CALIFORNIA, BERKELEY, Source DAI-B 60/05, p. 2174, Nov 1999, 117 pages.
Physics
Friedman Robertson Walker, Cosmology
Scientific paper
The theory of big-bang nucleosynthesis (BBN) is one of the most important predictions of the union of Friedmann- Robertson-Walker (FRW) cosmology with the Standard Model of elementary particle physics. Historically, BBN has enjoyed success in predicting the primordial abundances of the light elements; however, recent improvements in the observations of these elements (some of which appear to conflict with the predictions of standard BBN) have rekindled interest in non-standard scenarios of BBN. In my dissertation, I consider the effects of long-lived, radiatively decaying particles on BBN neglecting the hadronic branching ratio of these particles. The high- energy photons emitted in the decays of these particles may photodissociate the light elements that were synthesized during BBN. By comparing the resulting theoretical light-element abundances to the primordial abundances deduced from observation, I derive constraints on the properties of long-lived, radiatively decaying particles. Taking into account the recent controversies regarding the observations of the light-element abundances, I perform my analysis for various combinations of the measurements. I also discuss several models that predict such radiatively decaying particles, and I derive constraints on such models.
No associations
LandOfFree
Big Bang nucleosynthesis with high-energy photon injection does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Big Bang nucleosynthesis with high-energy photon injection, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Big Bang nucleosynthesis with high-energy photon injection will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1512605