Physics @ Berkeley
Events in Physics
Title: Inflationary Cosmology: Is Our Universe Part Of A Multiverse?    (Colloquia)
Start Date: 04/11/2011
Time: 4:30 pm
Location: 1 Le Conte Hall
Speaker: Alan Guth
Affiliation: Professor of Physics, MIT
Contact Person: Sarah Wittmer   (510) 642-3034
Details:

The talk will summarize how inflation works, and also the key pieces of evidence that our universe actually underwent this process. Almost all versions of inflation lead to eternal inflation: inflation goes on forever, producing a "multiverse" of "pocket universes". Although the line of reasoning is controverial, such a multiverse might help to explain one of the biggest mysteries in cosmology: the question of why the vacuum energy density (or cosmological constant) is many orders of magnitude smaller than would be expected from our understanding of particle physics.