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Lecture 22: The Planck Time---The Present Limit to All Knowledge

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Presentation on theme: "Lecture 22: The Planck Time---The Present Limit to All Knowledge"— Presentation transcript:

1 Lecture 22: The Planck Time---The Present Limit to All Knowledge
Astronomy 5: The Formation and Evolution of the Universe Sandra M. Faber Spring Quarter 2007 UC Santa Cruz

2 Cosmic history in 4 easy steps
Big Bang Zoom Graphics from WMAP team

3 Two giants of modern cosmology
AF-751 (left, Alan Guth), AF-772 (right, Andrei Linde) Alan Guth: Inflation Andre Linde: Eternal Inflation

4 Eternal inflation posits inflating universes budding out of inflating universes
AF-488. Credit: A. Linde. (Also shown in The Cosmos, Fig , but they don’t own the copyright).

5 The landscape of eternal inflation: graphs show energy density in “inflaton” field
AF-489. Credit: A. Linde.

6 Eternal inflation at higher resolution
The laws of physics may be different in each colored domain Our Universe is one of the valleys that is not inflating.

7 Calabi-Yau spaces: Attempts to “draw” the 11-dimensional space of string theory in three dimensions


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