Cosmology

The expanding universe, its contents, and the observations that constrain them.

Scope

• The FLRW metric and the Friedmann equations
• The cosmic microwave background
• Big Bang nucleosynthesis
• Large-scale structure and baryon acoustic oscillations
• The Hubble tension

Notes

Nothing written here yet. Working notes go in Research and Learning Lab; anything that becomes durable is promoted onto this page.

References

To be added as the topic is worked through.