Not Even Wrong

Various things that I’ve run across recently that seem worth mentioning:

The proceedings of the big yearly lattice gauge theory conference that was mentioned here, Lattice 2006, are now available here.

The New York Times today in its Science Times section has a very interesting article by Dennis Overbye entitled China Pursues Major Role in Particle Physics. It tells some of the history of particle physics in China, describes the BEPC accelerator in Beijing which has just had a luminosity upgrade, and discusses the role China may play in future accelerator projects, especially the ILC. A US physicist who sometimes works at BEPC, Frederick Harris, is quoted as saying “The rate China is growing, this is something they could contemplate hosting in 10 years.” Perhaps the future of high-energy frontier accelerator projects really will be in China.

There’s also an associated article about the spring 1989 physics conference in Beijing that overlapped with the Tiananmen Square massacre, with David Gross quoted as saying “Until the shooting began, the visit was delightful.” He and Vafa describe the bloody van that was supposed to be their transport, after it had been used to pick up wounded students, two of whom died.

Physics World has an article about physicists willing to make bets, called Physicists who fancy a flutter, featuring Tommaso Dorigo’s recent $1000 bet with Gordon Watts and Jacques Distler over what the LHC will see.

New Scientist has a feature article Physics Goes Hollywood, about Costas Efthimiou and a course he is teaching at the University of Central Florida. The idea of the course is to have students watch movies, often ones with a sci-fi theme, then use real physics to critique the accuracy of scenes in the movies. Costas is a particle theorist who has worked on conformal field theories, and was a visitor here at Columbia for a while, from what I remember. He has several papers about teachng physics using films, most recently this one.

The Cao-Zhu paper giving the details of the proof of the Poincare conjecture that originally appeared in the Asian Journal of Mathematics has now been posted in revised form on the the arXiv. The revised version includes an apology to Kleiner and Lott for not acknowledging the use of their work in the original version.

Geometric Langlands is definitely the hot topic of the moment, I just learned about two more conferences about this that will take place soon. One is a Gottingen Winterschule, on January 4-7, the second is a program on Langlands Duality and Physics, to be held at the Schrodinger Institute in Vienna from January 9-20.

A couple weeks ago in Hamburg there was a conference on Kahler Geometry and Mathematical Physics, held to celebrate the 100th birthday of Erich Kahler.

Princeton will be hosting a conference next year entitled Geometry and the Imagination in honor of Bill Thurston’s 60th birthday.

Dmitry Vaintrob, son of mathematician Arkady Vaintrob, has won a $100,000 scholarship from the Siemens foundation based on a research project in string topology. For more discussion of this, and what it means for string theory, see here.

Update: Two more.

Giorgios Choudalakis took a poll back in August of grad-students, postdocs and professors associated with Fermilab, asking them what they expected the LHC to find. Here are the results. More about this at Fermilab Today.

A commenter points out that this week’s Zippy the Pinhead deals with one character’s doubts about string theory. Over the last few years, the comic has often dealt with string theory, to see this try typing “string” into this search page.

There’s filming going on outside my office window today, right at the entrance to the Columbia Mathematics building. The film is Brief Interviews With Hideous Men, with a screenplay based on the David Foster Wallace book of the same name.

On the way in here I stopped at a bookstore and took a look at the new Thomas Pynchon novel Against the Day. Over at Cosmic Variance, Mark Trodden and Sean Carroll are Pynchon fans and have postings about this. I was quite fond of Vineland and enjoyed some of Pynchon’s earlier books, but he lost me with Mason and Dixon, and this new one doesn’t look promising. From flipping through it, one important topic seems to be quaternions and their relation to 4d space-time geometry, and a group of characters are called the Quaternioneers. I almost bought the book, thinking that it was my duty as a chronicler of the nexus of math, physics and popular culture to read the thing. But when I picked it up, its sheer heft caused an immediate feeling of discouragement, so I put it back down and will wait for reports from others.

There’s a new movie out this week called Deja Vu, and evidently string theory play a significant role in its time-travel/multiverse based plot. My colleague Brian Greene was scientific consultant on the film, and the Cosmic Log MSNBC blog has a story about this, noting that he’s also involved in another time-travel movie project (Mimzy), and appeared in yet a third (Frequency). The MSNBC story does explain that time-travel is not a big topic of current physics research, but describes physicists as “intrigued by the trippy concepts spawned by string theory – indicating that the universe could follow any of 10⁵⁰⁰ possible courses, and that our course seems to be going down just the right path to allow for the development of stars, galaxies and life” (the story does note that some people have a problem with this and gives “Not Even Wrong” a mention). While I gave up on the idea of spending $35 on the Pynchon book and devoting endless hours to reading its more than 1100 pages, spending $10 and devoting a couple hours to watching a cheesy movie seems like a much more viable way of fulfilling my blogger duties, so I think I’ll be doing that this evening.

Continuing on the science fiction theme, next year’s Les Houches summer school will be on the topic String Theory and the Real World.

In further media news, last week I talked with someone from the CBC radio program The Current, and supposedly they were going to use some of this in a program on the controversy over string theory that aired yesterday. Also someone tells me that this past week’s issue of Der Spiegel has an article on this.

Finally, for some non-media science fact, the week before last there was a workshop in Paris on High Energy Physics in the LHC Era. There were quite a few interesting talks, including one by Albert de Roeck on post LHC accelerator possiblities (mainly the SLHC, a luminosity upgrade of the LHC), by Alessandro Strumia on astrophysical neutrino experiments, and by Fabio Zwirner on supersymmetry (see page 18 of his slides for a good reason not to believe in supersymmetry). The summary talk was given by Luciano Maiani, who argued that the next machine after the LHC should be a larger proton-proton machine, on the SSC size scale, to be built in the US (since it wouldn’t even fit at CERN), with an electron-positron collider to be built at CERN.

Update: For a more general discussion of the question of whether new physics that solves the naturalness problem will be visible at the LHC, see a recent posting by Tommaso Dorigo, who is reporting on a conference going on in Bologna, especially the talk by Andrea Romanino.

Update: The movie is completely generic, including no strings, but just a standard-issue wormhole.

You know things are getting strange when Esquire magazine starts running an article on the current state of particle theory. As you might expect, their take on this is rather odd. It centers around Nima Arkani-Hamed and begins with:

For a hundred years, physicists have been scraping away at the strange and complicated phenomena obscuring the true face of our universe. Finally, a few brillant young thinkers may be on the verge of getting the first real glimpse.

which is pretty much complete nonsense, totally ignoring the huge success of the standard model in favor of the latest extremely speculative models promoted by some people.

The Esquire writer talked to several theorists, including Lee Smolin and Laurent Freidel at Perimeter, where he describes young postdocs as hanging out at a local hipster bar, with one of their number describing string theorists as “the post 9/11 theocons”, afraid of anything new: “The string theorists just masturbate to their same ideas.” The postdocs do note that at Perimeter string theorists and non-string theorists get along fine. Freidel, a faculty member at Perimeter, is described as not having slept for two weeks straight when he was working on a solution of QCD, with his wife asking a colleague “Can you do something? He’s going insane.”

After describing Perimeter, the article then moves on to Witten and Maldacena at the Institute in Princeton. Witten’s comments about the current state of things go as follows:

Well, you can’t have your best year every year… I’ve lived through two periods, the mid-eighties and mid-nineties, where for about six or seven years, roughly, there were a lot of really interesting results that were also relatively easy. And I’ve also lived through several periods by now where you have to work a little harder to get something interesting.

Witten goes on to say that he is putting his hopes in the LHC and the idea that it is likely to tell us something about the nature of electroweak symmetry breaking.

There’s some attempt to describe Maldacena and his AdS/CFT conjecture, which is characterized as “a mind fuck, but not crazy.” The article then moves back to Arkani-Hamed at Harvard, with “For crazy, you have to go about 250 miles north.” His view of the current controversy over string theory is said to be “forget the antistring polemicists! They’re just reactionaries! This could be the greatest discovery of our time!”, and he heavily promotes the anthropic landscape and the idea that the LHC will provide evidence for it. He says:

The mantra of string theory ten years ago was that the theory was smarter than you… Well, exactly that–just follow the theory where it leads you and it leads to this precipice. And now we have to decide what to do. So now a number of people are deciding to jump… And I think that those of us that decided to take the plunge are staring at the true nature of the beast for the first time.

Personally, I think if a scientific theory with no experimental evidence for it takes you to the edge of a precipice and tells you to jump, the sensible thing to do is to say “No Thanks!”, back away, and go find another theory. But that’s just me.

The latest New Scientist also has something about the string theory controversy, an article by Michio Kaku entitled Will we ever have a theory of everything?, part of a series of articles on “The Big Questions”. Kaku describes the controversy dramatically:

It’s all-out war. The hostilities have begun. With guns blazing, daily salvos are being fired by both sides. Welcome to the conflict raging within the rarefied world of theoretical physics, where a civil war has erupted over string theory and a theory of everything.

While I disagree with the far too rosy picture he paints of the prospects for string theory, Kaku takes a very sensible attitude towards the whole thing:

So who’s right? Actually, both have a legitimate point of view. But far from signalling a collapse in physics, this debate is actually rather healthy. It’s a sign of the vitality of theoretical physics that people are so passionate about the outcome. Science flourishes with controversy.

and ends, reasonably enough with:

One day, some bright, enterprising physicist, perhaps inspired by this article, will complete the theory, open the doorway, and use the power of pure thought to determine if string theory is a theory of everything, anything, or nothing.

New Scientist also asked various well-known physicists what they thought might happen in physics in the next 50 years. Weinberg says that he hopes for a final theory of particle physics, with discovery of superpartners a first step. Tegmark also hopes for a final theory, one which will have us living in just one of many “parallel universes”. ‘t Hooft hopes for a deterministic model that would unify quantum mechanics and gravity, Randall for a new understanding of space and time, Carroll for a theory of the big bang, Wilczek for a new golden age of particle physics catalyzed by the LHC, Kolb for the discovery of gravitational waves and Vilenkin for the discovery of a cosmic string. The most popular question on many these people’s minds is that of whether or not we live in a multiverse (Tegmark, Rees, Krauss mention this). Among mathematicians, Marcus du Sautoy suggests we’ll have a proof of the Riemann hypothesis, Timothy Gowers favors P=NP.

Among all these and other scientists, I think the most plausible prediction comes from my graduate school roommate, Nathan Myhrvold, who thinks a revolution will come from materials science, with the development of new “metamaterials”, substances with new, intricate synthetic structures.

Update: Somehow I hadn’t noticed that New Scientist also had a prediction from Witten:

String theory will continue to be an extremely fertile source of new ideas. It will still be viewed as the interesting candidate for quantum gravity, and may even be more or less understood by 2056.

Interesting that he thinks that 50 years from now the situation will be much the same, with string theory still just a “candidate” for quantum gravity, and he doesn’t predict that we will have string-based unification of particle physics and gravity.

For some insight into the difficulties associated with being an untenured professor and trying to get an NSF grant in astronomy, see this post (and comments) by Rob Knop. For those innocent of the ways of academia, there’s a post by Doug Natelson on what a well-organized faculty search is like (both of these via Angry Physics).

This week Witten will be giving two series of talks on gauge theory and geometric Langlands, one at Berkeley, and one at Harvard. Unfortunately I won’t be able to make it to either, perhaps someone who does attend some of the talks can report on what Witten has to say, in particular on what might be new since his long paper with Kapustin on the subject earlier this year.

Some of the talks from last month’s workshop on axions at the Institute for Advanced Study are now on-line.

Honeywell is sponsoring an educational program involving Nobel Laureates in chemistry and physics, called the Honeywell-Nobel Initiative. They already have material on-line from Leon Lederman and Horst Stormer, and from one of their promotional ads it looks like Frank Wilczek will also participate.

The Perimeter Institute has a new, improved web-site, with many online talks, both scientific seminars and talks for the general public.

The Templeton Foundation also has a new web-site. This month the featured “Life’s Big Question” is Do we live in a multiverse?

The European Mathematical Society has a newsletter.

Several people have noticed that the cover of the UK edition of my book is being widely emulated, see here and here.

The folks at Axes and Alleys have a review of my book in their latest issue. It seems that the members of the Royal Tractor Repair and Maintenance Society of Outer Mongolia found the book quite confusing. I guess this is only fair, since I’ve always found them quite confusing…

In case anyone is worried about the supply of unadulterated hype about string/M-theory drying up, there’s a new book out by John Gribbin which I took a look at yesterday in the bookstore.

Since the KITP does such a great job of providing a video record of the activities there, informal talks at the string theory phenomenology program have provided a fascinating public record of the way in which well-known string theorists are struggling with the all-too-obvious collapse of any reasonable hopes for getting predictions out of string theory. Last week there was an informal discussion with Michael Douglas of the String Vacuum Project, which was quite fascinating to listen to. I had trouble hearing what David Gross had to say, which was a shame, maybe someone with better ears who listens to this can report what they hear. Douglas encountered objections from the audience when he claimed that if one could get virtually any low energy physics out of one string vacuum or another, there was not any point to the whole project, with someone making the now standard claim that this situation is no worse than that of QFT.

Starting tomorrow there’s a workshop in London entitled M-theory in the City, in some sense celebrating the 11th birthday of M-theory. There will be a reception on Thursday evening, and the organizers of the workshop are noting that:

Recently there have been a variety of publications presenting a sceptical view of string and M-theory. These have been reported extensively in both the national press and various popular science journals.

and encouraging journalists interested in this topic to attend the reception and use:

the opportunity to discuss with the participants and question where string theory is heading and address the recent criticisms string theory has faced.

Various and assorted quantum gravity news:

The latest Physics Today has an article by Lee Smolin entitled Quantum Gravity Faces Reality (available only to APS members). People concerned about open access to the scientific literature should note that sometimes professional societies like the APS are among the worst offenders. It appears that Physics Today is one of relatively few scientific publications that universities and other institutions are not even allowed to buy electronic access to. I’ve been told that this restriction of electronic access to subscribers is an intentional tactic of the APS to keep up its circulation figures and thus advertising rates.

The latest Nature Physics has a report from Ashtekar about recent developments in loop quantum gravity.

There’s a new paper on the arXiv by Baratin and Freidel that looks quite interesting. It’s too bad that Christine Dantas has given up her blog that provided an excellent location for discussion of this kind of quantum gravity research. I hope someone else will pick up where she left off. Blogger Sabine Hossenfelder has a recent arXiv preprint on Phenomenological Quantum Gravity.

I heard from my sister-in-law that NPR yesterday ran a segment on string theory, but it was mostly about soccer. I found this hard to believe, but she was right, the story is on-line here. NPR’s Richard Harris covered a soccer game in Santa Barbara between visiting string theorists and laser physicists. The string theorists were trailing much of the game, but finally won on a penalty kick they got due to a misunderstanding by the laser physicists. The story does have some remarkable quotes from string theorists about the prospects for the theory. Steve Giddings “is actually feeling somewhat more optimistic about the fate of string theory these days”, arguing that maybe the LHC will start producing strings (the article does note that “even most string theorists say this is a real long shot”). David Gross says that the reason to do string theory is that “…there’s nothing else. There’s no other game in town.” He acknowledges that string theorists don’t even know what the theory is, and are out on a limb and trusting in faith:

Even those of us who work in the field aren’t really sure what string theory is or what it’s going to be, Gross says. So when you’re in this kind of speculative, exploratory science, it’s important to have faith because you’re out on a big limb. So I think it’s really a question of whether we believe this is the right direction; and that I do believe rather firmly.

Update: Lee Smolin has put up a letter on his web-site in response to queries and criticisms he has received in response to his recent book.

Yesterday at the KITP in Santa Barbara, George Johnson gave a second talk and led a discussion on the subject of the “String Wars”. The rather remarkable first session was discussed here, here and here. This time people were much better behaved, and the main topic was the media coverage of physics in general, and the past history of the media interest in string theory, and what effects this might have had.

Johnson has put on his web-site copies of various articles from the NYTimes about string theory. The first mention of superstrings was in a piece by Walter Sullivan back in May 1985, just a few months after the “First Superstring Revolution” really got going. This piece included cautionary comments from C.N. Yang about the lack of even “a single experimental hint” and from Michael Green that “I’ve seen many bandwagons come and go.” Interestingly, already at this time the main suggested test of string theory was astrophysical or cosmological, with the Times referring to a recent Nature article about the possibility of seeing effects of the “shadow matter” that one gets from the other E8 in the E8 x E8 model popular back then (and still popular to this day).

Much of the KITP discussion concerned what effect news stories and popular books promoting string theory have had, with several people noting that they think they have been responsible for the large number of students they have seen wanting to do graduate work in string theory. Someone in the audience also pointed out that the continual use of the modifier “super” seems to get people’s attention, with students showing up wanting to study “supersymmetry” even though they didn’t know what it was, and it was much harder to get them interested in, say, “diffractive scattering.”

The latest Nature Physics has a fairly sensible editorial (Tied Up With String?) about the string theory controversy. Popular promotion of string theory continues today at Stanford, where the Wonderfest Festival of Science is featuring Raphael Bousso and Leonard Susskind discussing “Is the World Made of Strings?”