Contributed chapter to " Proceedings of the New
Cosmology Summer School"
edt. M. Colless, to be published by World Scientific, 2003. Based on
five lectures given at the 16th Canberra International Summer School
"The New Cosmology" held 3-14 February at the Australian National
University.

astro-ph/0305179

For a PDF version of the article, click
here.

For a Postscript version of the article, click
here.

# INFLATION AND THE COSMIC MICROWAVE BACKGROUND

### Charles H. Lineweaver

*School of
Physics, University
of New South Wales, Sydney, Australia*

*email:
charley@bat.phys.unsw.edu.au*

**Abstract.** I present a pedagogical review of inflation and the cosmic
microwave background. I describe how a short period of accelerated
expansion can replace the special initial conditions of the standard big
bang model. I also describe the development of CMBology: the study of
the cosmic microwave background. This cool (3 K) new cosmological tool
is an increasingly precise rival and complement to many other methods in
the race to determine the parameters of the Universe: its age, size,
composition and detailed evolution.

**Table of Contents**

- A NEW COSMOLOGY
- Progress
- Big Bang: Guilty of Not Having an Explanation

- TUNNEL VISION: THE INFLATIONARY SOLUTION
- Friedmann-Robertson-Walker metric ->
Hubble's law and Cosmic Event Horizons
- Inflationary Expansion: The Magic of a
Shrinking Comoving Event Horizon

- FRIEDMANN OSCILLATIONS: THE RISE AND FALL OF
DOMINANT COMPONENTS
- Friedmann's Equation -> Exponential Expansion

- INFLATIONARY SOLUTIONS TO THE FLATNESS AND
HORIZON PROBLEMS
- What is the Flatness Problem?
- Solving the Flatness Problem
- Horizon problem
- How big is a causally connected patch of the
CMB without and with inflation?

- HOW DOES INFLATION PRODUCE ALL THE STRUCTURE IN
THE UNIVERSE?

- THE STATUS OF INFLATION
- Inflationary Observables

- CMB
- History
- What is the CMB?
- Spectrum
- Where did the energy of the CMB come from?
- Dipole
- Anisotropies
- What are the oldest fossils we have from the
early universe?
- Observational Constraints from the CMB
- Background and the Bumps on it and the
Evolution of those Bumps
- The End of Cosmology?
- Tell me More

- REFERENCES