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100 Years of Science

D. Carrigan - Fermilab                                                        July 7, 2004

26

Anthropic Principle – a perfect universe for us

“… it is well known, … that other properties of our universe are very finely tuned and will only exist over a quite small bandwidth. We shall pay special attention to such ‘‘anthropic’’ constraints, as discussed for example in the book by Barrow and Tipler and will be interested in the bandwidth in R for which they are satisfied.”

Cosmology and the standard model

James D. Bjorken*

Stanford Linear Accelerator Center, Stanford University, Stanford, California 94309

Received 21 October 2002; published 26 February 2003

PHYSICAL REVIEW D 67, 043508 (2003)

Brandon Carter (73)

                            …. Crucial to the properties of nuclear and atomic matter are the values of the fine-structure constant ~here constrained to a reasonable range of values, the ratio of electron to proton mass, the ratio of pion to proton mass, and the neutron proton mass difference

                                                               ….Finally, we may consider the mechanism for producing carbon in stars. This depends upon the existence of the anthropically famous triple- a reaction …with the resonance in 12C predicted by Hoyle …  together with the absence of a crucial level in 16O.”

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“What is Life?”

Erwin Schrðdinger (1944)

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