Monthly Archives: February 2005

Wick Rotation

There’s a quite interesting discussion going on about Wick rotation over at Lubos Motl’s weblog. In flat space-time, the situation is well-understood: if your Hamiltonian has good positivity properties you can analytically continue to imaginary values of time, and when … Continue reading

Posted in Uncategorized | 61 Comments

Ed Witten, TV writer

There’s a story in this Sunday’s New York Times television section describing how Ed Witten pitched a story idea to the people who make the new TV show Numb3rs. According to one of the show’s executive producers, Cheryl Heuton, “Ed … Continue reading

Posted in Uncategorized | 16 Comments

UFOs

Last night ABC News ran a two-hour primetime special on The UFO Phenomenon — Seeing is Believing. As part of this special program, they interviewed “one of the world’s leading theoretical physicists”, who, according to Bob Park, “looked a lot … Continue reading

Posted in Uncategorized | 13 Comments

Atiyah’s Collected Works

I recently acquired a copy of the new volume 6 of Atiyah’s collected works, which contains things he wrote from the late eighties until very recently (the latest article is his joint paper with Graeme Segal on twisted K-theory). Unfortunately … Continue reading

Posted in Uncategorized | 12 Comments

Depression and Desperation

In a Stanford University press release today, Susskind promotes the “Landscape”, calling each different vacuum state a “pocket universe”. Referring to people like David Gross who oppose the idea, Susskind says: “More and more as time goes on, the opponents … Continue reading

Posted in Uncategorized | 33 Comments

The Next Few Years in Particle Physics

By far the most important event for particle physics during the next few years will be the beginning of operation of the LHC, now planned for 2007. Besides that, here are various sources of information about what else will be … Continue reading

Posted in Uncategorized | 6 Comments

The Road to Reality

Roger Penrose’s new book The Road to Reality is being released in the U.S. in a week or so. I’d been intending to write something about the book ever since I got a copy of the British edition a couple … Continue reading

Posted in Book Reviews | 51 Comments

Weil’s Letter From Prison

The great French mathematician André Weil spent the months of February-May 1940 in a prison in Rouen, as a result of what he referred to as “a disagreement with the French authorities on the subject of my military obligations”. Others … Continue reading

Posted in Uncategorized | 10 Comments

FY 2006 Budget Request

The FY 2006 budget requests to Congress are out today. In the parts relevant to funding for mathematics and physics, the information about the NSF request is here, and information about the DOE request is here. One should really be … Continue reading

Posted in Uncategorized | 1 Comment

Douglas at City College

Michael Douglas gave a colloquium at City College this afternoon, with the title “Are there testable predictions of string theory?” I went up there to the talk, figuring that I knew more or less what he would say, but he … Continue reading

Posted in Uncategorized | 34 Comments