The Big Bang Vs. the Big Rumble

WBUR radio in Boston hosts a talk with two physicists, Alan Guth and Neil Turok, who represent, respectively, the consensus theory of the inflationary Big Bang and an upstart theory of the initiation of the universe in the collision of two three-dimensional "branes." Turok and Paul Steinhardt developed their "Ekpyrotic proposal" out of the mathematics behind string theory. In the audio the two physicists are perhaps more respectful of one another's views than the host wishes them to be. If you ignore the "let's you and him fight" framing of the debate, you will hear some interesting physics elucidated.

Comments

String theory...

[jeffasselin]

I used to like the ideas of string theory, but after what, 15-20 years of work, not a single observable prediction has been made by the theory. Heck, we don't even have a theory has such yet, more like a plethora of them, and a few that suggest they're all correct!

Anyone making suggestions opposing the current cosmological framework using string theory had better have something more than vague mathematical foundations if they want to convince anyone. They sure won't convince me anytime soon.