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# Category Archives: Multiverse Mania

## B-mode News

While I was away on vacation, the big news in physics was the BICEP2 result on B-modes in the CMB. Maybe it’s just as well I wasn’t available to blog about this, since inflation and cosmology aren’t at all my … Continue reading

Posted in Multiverse Mania
48 Comments

## Multiverse Mania at Wikipedia

The quality of Wikipedia entries about mathematics is often quite good, but unfortunately the same cannot be said for their entries about physics. I happened to take a look today at the Wikipedia entry for Multiverse, which is an outrageously … Continue reading

Posted in Multiverse Mania
43 Comments

## Various and Sundry

It seems to be too early for April Fool’s day, and yet the arXiv has Dark Matter as a Trigger for Periodic Comet Impacts by Lisa Randall and Matt Reece, a preprint described as “Accepted by Physical Review Letters, 4 … Continue reading

Posted in Multiverse Mania, Uncategorized
25 Comments

## More Quick Links

First, a couple of examples of recent progress in mathematics Terry Tao has some new ideas about the Navier-Stokes equation. See his blog here, a paper here, and a story by Erica Klarreich at Quanta here. I’ve been hoping to … Continue reading

Posted in Multiverse Mania, Uncategorized
9 Comments

## The Multiverse, Evidence and Theology

Yes, this multiverse business is tedious, but since it is becoming mainstream physics, with colloquium talks here at Columbia devoted to it, and the Columbia University Press publishing books about it, seems to me that someone at Columbia should be … Continue reading

Posted in Book Reviews, Multiverse Mania
62 Comments

## More Links, Interesting and Tedious

First some links to interesting things: There’s a fascinating interview with Deligne in the latest AMS Notices. Alexandre Grothendieck: A Mathematical Portrait includes some great expository pieces about the mathematics developed by Grothendieck. There’s also available Grothendieck’s own Esquisse Thématique, … Continue reading

Posted in Multiverse Mania, Uncategorized
44 Comments

## The Perfect Wave

Sometimes when I have come across claims of exotic phenomena at the far-out edge of the field of BSM physics based on branes and string theory (like time travel, or brane-world explanations of the bad OPERA result), my initial reaction … Continue reading

Posted in Book Reviews, Multiverse Mania
23 Comments

## Quick Links

I’ve always thought more philosophers of science should be weighing in on the debate over “falsifiability” and the “demarcation problem” surrounding string theory and the multiverse (i.e. are these really science?). This is a complex and tricky subject that they … Continue reading

Posted in Multiverse Mania
17 Comments

## The Principle

I just found out about a new film coming out this spring, which appears to exemplify exactly the dangers I was pointing to in my last posting. It’s entitled The Principle, and features physicists Michio Kaku, Lawrence Krauss and Max … Continue reading

Posted in Multiverse Mania
136 Comments

## Our Mathematical Universe

Max Tegmark has a new book out, entitled Our Mathematical Universe, which is getting a lot of attention. I’ve written a review of the book for the Wall Street Journal, which is now available (although now behind a paywall, if … Continue reading

Posted in Book Reviews, Multiverse Mania
125 Comments