25 June 2007 to 10 August 2007
CERN PH-TH
Europe/Zurich timezone

The entropic approach to understanding the cosmological constant

8 Aug 2007, 14:00
1h
TH AMPHITHEATRE (CERN PH-TH)

TH AMPHITHEATRE

CERN PH-TH

Seminar Seminar

Speaker

Jim Cline

Description

It has recently been proposed to replace the anthropic principle with a more objective criterion: the likelihood of creating observers is proportional to the amount of entropy production within a causally connected region of the universe. This "entropic principle" does a better job of predicting the value of the cosmological constant than does its anthropic predecessor, and it is falsifiable, through its power to predict other properties of the universe to which the existence of observers is sensitive. For example, dark matter should be unstable on cosmological time scales.

Presentation Materials