Dynamical dark energy and variation of fundamental
Steffen Stern
Broschiertes Buch

Dynamical dark energy and variation of fundamental "constants"

A study of experimental probes and theoretical models

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In this thesis we study the influence of a possible variation of fundamental "constants" on the process of Big Bang Nucleosynthesis (BBN). Our findings are combined with further studies on variations of constants in other physical processes to constrain models of grand unification (GUT) and quintessence. We find that recent studies of varying constants are in contradiction with each other and BBN in the framework of six exemplary GUT scenarios, if one assumes monotonic variation with time. We conclude that there is strong tension between recent claims of varying constants, hence either some cl...