The fine-tuning problems of particle physics and anthropic mechanisms
Abstract
Description
Many of the classic problems of particle physics appear in a very different light when viewed from the perspective of the multiverse. Most importantly the two great ``fine tuning'' problems that motivate the field are far less serious when one accounts for the required anthropic constraints which exist in a multiverse. However, the challenge then becomes to construct a realistic physical theory of the multiverse and test it. I describe some phenomenology of the quark and lepton masses that may provide a window to the theory that underlies the multiverse.
This is a chapter in the book "Universe or Multiverse" ed. by Bernard Carr pp 231-246 (Cambridge University Press). It was written about 2 years ago and I have now updated a few references and other minor changes
This is a chapter in the book "Universe or Multiverse" ed. by Bernard Carr pp 231-246 (Cambridge University Press). It was written about 2 years ago and I have now updated a few references and other minor changes