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What Happened Before the Big Bang? | An Infinity of Worlds - Will Kinney (#224)

Into the Impossible With Brian Keating

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Is There a Single Field Model That Fits the Data?

Theories involving non canonical o grangians, things at a very commonin string theory predict that youould have a speed of sound during inflation. But in the case of a single field model, it will still always be gousy and adiobatic. So i don't consider that necessarily a crushing lack of preductivity for the inflationry paradi. And there's no reasonto particular reason to expect that it wouldn't have been that way. It certainly fits the data.

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