Cosmological Models Scorecard
At the Princeton meeting "Critical Dialogues in Cosmology" there was a
session in which models for structure formation were rated. The session
was chaired by Jim Peebles, with Carlos Frenk acting as Devil's Advocate.
The models which were presented were:
- "Standard" Cold Dark Matter (CDM) - David Spergel
- Lambda CDM (LCDM) - Michael Turner
- Open CDM (OCDM) - Richard Gott
- Hot-plus-Cold/Mixed Dark Matter (MDM) - Joel Primack
- Toplogical Defects (defects) - Albert Stebbins
The models were scored on their ability to pass a variety of tests. We
present the scorecard below in the form it took before the professors
argued for a better grade!
| Test |
CDM | LCDM | OCDM | MDM | Defects |
|---|
| Age > 11Gyr |
 |
|
|
|
|
| h > 0.5 |
|
|
|
|
|
| Cluster Baryon Fraction |
|
|
|
 |
|
| Cluster Abundance |
|
|
|
 |
|
| CMB Anisotropies |
|
|
|
|
|
| Large Scale Structure |
|
|
|
|
|
| q0=0.3± 0.3 |
|
|
|
|
|
| Galaxies at z > 1 |
|
|
|
|
|
| No Dwarfs in Voids |
|
|
|
|
|
| Bulk Flows |
|
|
|
|
|
| Beauty |
|
|
|
|
|
| Status |
 |
 |
|
|
|
A scorecard showing the status of cosmological models,
from the meeting held to commemorate the 250th Anniversary of Princeton
University.
Martin White & Douglas Scott