Report-no: EFI-2001-27;
astro-ph/0107571


DARK ENERGY AND THE PREPOSTEROUS UNIVERSE

Sean M. Carroll


Enrico Fermi Institute and Department of Physics, University of Chicago
5640 S. Ellis Avenue, Chicago, IL 60637, USA
E-mail: carroll@theory.uchicago.edu


Abstract. A brief review is offered of the theoretical background concerning dark energy: what is required by observations, what sort of models are being considered, and how they fit into particle physics and gravitation. Contribution to the SNAP (SuperNova Acceleration Probe) Yellow Book.


Table of Contents

THE PREPOSTEROUS UNIVERSE
Dark energy
The cosmological constant problem
The coincidence problem

WHAT MIGHT BE GOING ON?
An honest cosmological constant
Dynamical dark energy
Was Einstein wrong?

DISCUSSION

REFERENCES

For a postscript version of the article, click here.

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