Speaker: Charley Lineweaver
Affiliation: The Australian National University (Canberra)
Abstract
I will present a plot of all the objects in the universe and describe how objects condensed out of the hot big bang as background temperatures and densities decreased with the expansion of the universe.
I will describe how general relativity and quantum mechanics impose boundaries on object size and mass, creating forbidden zones where objects are not possible. This plot and its boundaries raise many questions such as:
- Is the universe a black hole?
- Did the universe start as the smallest black hole possible -- a Planck-mass instanton?
- Are instantons the highest energy gamma rays?
About Physics colloquium
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