hep-ph/0111080

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Early Universe Cosmology and Tests of Fundamental Physics:
Report of the P4.8 Working Subgroup, Snowmass 2001

Andreas Albrecht 1, Joshua A. Frieman 2, 3, Mark Trodden 4


1 Department of Physics
University of California at Davis
One Shields Ave.
Davis, CA 95616

2 NASA/Fermilab Astrophysics Center
Fermi National Accelerator Laboratory
P. O. Box 500, Batavia, IL 60510

3 Department of Astronomy & Astrophysics
The University of Chicago
5640 S. Ellis Avenue, Chicago, IL 60637

4 Department of Physics
Syracuse University
Syracuse, NY, 13244-1130


Abstract. This is the report of the Working Group on Early Universe Cosmology and Tests of Fundamental Physics, group P4.8 of the of the Snowmass 2001 conference. Here we summarize the impressive array of advances that have taken place in this field, and identify opportunities for even greater progress in the future. Topics include Dark Energy, Cosmic Acceleration, Inflation, Phase Transitions, Baryogenesis, and String/M-theory Cosmology. The introductory section gives an executive summary with six key open questions on which we can expect to make significant progress.


Table of Contents

INTRODUCTION

DARK MATTER

DARK ENERGY AND THE ACCELERATING UNIVERSE

Inflation: Models Tests and Alternatives
Overview
The basic idea
Tests of Inflation
Density
Coherence from inflation
Gravity waves from inflation
The scalar spectral index
Further tests of inflation
Can one really test inflation?
Inflation and fundamental physics
Alternatives to inflation

PHASE TRANSITION AND THEIR RELICS
Overview
The many roles of cosmic phase transitions

BARYOGENESIS

FUNDAMENTAL PHYSICS AND COSMOLOGY
Finite Temperature String / M-Theory and Cosmology
Extra Dimensions and Cosmology
de-Sitter Space as a Solution to M-Theory
Transplanckian Physics and Cosmology

REFERENCES

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