Not Even Wrong

The SLAC SPIRES yearly list of most frequently cited papers in 2005 is now available. I commented recently on what this was likely to show, quantifying the intellectual collapse of string theory since 1999.

There are exactly three post-1999 particle theory papers among the top 50 in the list. Two of these are about flux compactifications and have moved up significantly since last year reflecting the increasing popularity of landscape studies. At number 18 (up from 29) is the KKLT paper from early 2003, and at number 34 (up from 54) is an earlier paper from 2001 by Giddings, Kachru and Polchinski. The only non-landscape post-1999 paper to crack the top 50 is the 2002 Berenstein, Maldacena and Nastase paper on PP waves (which is part of the AdS/CFT story). It just barely makes it at number 49 (down from 32 last year).

The highest ranked post-2003 paper is the Arkani-Hamed and Dimopoulos 2004 paper on split supersymmetry. It’s at number 106, with a total of 103 citations.

There’s also a new 2005 All-time topcited list. Maldacena’s AdS/CFT paper from 1997 remains very near the top, with 3881 citations. There is nothing post-1999 on this list, which includes the top 186 papers. If recent trends continue indefinitely, it seems entirely possible that no post-1999 particle theory paper will ever make this all-time top-cited list, allowing historians of science to conclusively pinpoint the death of particle theory as having coincided fairly precisely with the end of the 20th century. This is optimistically assuming people lose interest in the landscape. It is also possible that landscape studies will come to dominate the field, with landscape papers then climbing up into the all-time topcited list. This doesn’t really change the conclusion about the death of particle theory.

The 2006 Templeton Prize of $1.4 million was awarded yesterday to cosmologist John Barrow. Barrow is the author of about 400 scientific articles and nearly 20 popular books. In recent years, one of his interests has been the possibility of time-variation of fundamental constants. At a press conference in New York yesterday, he said that new data on quasars expected within two months may provide evidence of such variation.

Science and Spirit has an article by Barrow written for the occasion and called The Unexpected Universe. It also has a report on the press conference that goes on at length about the string theory anthropic landscape and credits Barrow (and Tipler) with writing a “highly influential book for the interface between science and religion” back in 1986 entitled The Anthropic Cosmological Principle. The report includes the following gibberish:

String theorists also assume that other universes, which collectively compose a “multiverse,” exist in other dimensions outside of our observational parameters. Our own very limited experience suggests that finely tuned universes might be more likely to exist than more randomly constructed universes, at least over the long term. If this is true, then fine-tuning may be a guide that cosmologists can use to one day locate and observe an alternate universe.

Barrow himself however doesn’t seem to have much to say about the string theory landscape.

Maybe if Leonard Susskind hadn’t said unfriendly things about having no use for religion in his recent book, he could have been $1.4 million richer instead of Barrow. The New York Times headlines its story about this Math Professor Wins a Coveted Religion Award. A mathematician friend of mine is kind of outraged at this and wants to write to the Times to complain about the description of Barrow as a “math professor”.

Data from the second and third year of the WMAP satellite experiment has just been released a few minutes ago. There a press release and other general information page. The scientific paper explaining what this new data tells us about cosmology is Three-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Implications for Cosmology. This is a good time to admit that I’m no cosmologist, and thus not the person to get information from about the significance of these results. However, I expect some of the earliest informed discussion of them should take place on various blogs, and I’ll be linking to those as I see them.

Update: Comments from Sean Carroll and Steinn Sigurosson. Discussion at CosmoCoffee and Bad Astronomy and Universe Today Forum. Also a posting from Lubos. I’m no expert here, but Lubos’s comments seem to me to be nonsense (I find it hard to believe that in the three-year data set they’re resolving structure 100 times smaller than in the first year, and I think he’s just completely wrong to say that this data rules out ekpyrotic or cyclic models).

Update: Christine Dantas also has more about this.

Update: Amazingly, Lubos still is maintaining that the 3 year results have 100 times better angular resolution than the 1 year results. This kind of fanatical inability to ever admit that one was wrong about something goes a long way towards explaining the current state of string theory.

John Baez’s latest This Week’s Finds is out. As in other recent issues, he starts with some of the most fantastic astronomical pictures around. He also links to his recent non-technical talk Fundamental Physics: Where We Stand Today, which also has fantastic pictures. In the talk he describes how, since the 80s, “many physicists feel stuck”, and “continue to make predictions but they are usually wrong or not yet testable. This has led to a feeling of malaise. Why are they failing?” He partially answers this question with

But when their theories made incorrect or untestable predictions, many theorists failed to rethink their position. It is difficult to publicly retract bold claims. Instead, they focus more and more attention on the mathematical elegance of their theories… some becoming mathematicians in disguise. (There are worse fates).

Someone who was at the talk reports that afterwards Carlo Rovelli asked Baez “whether what he had just presented didn’t imply that the theoretical physics of the last 25 years was ‘junk'”, and that Baez “replied after some hesitation ‘You said it'”.

A physicist who has been concerned for quite a while about the sociological changes in how particle theory is done and the ever more critical situation that the field finds itself in is theorist Bert Schroer. His specialty is in the area of algebraic approaches to QFT, especially conformally invariant ones. More than a decade ago he was writing review articles on QFT well-worth reading that included warnings about what has been going on. For some examples, see his Reminiscences about Many Pitfalls and Some Successes of QFT Within the Last Three Decades and Motivations and Physical Aims of Algebraic QFT.

Schroer has just posted three new articles on the arXiv. One of these is entitled String theory and the crisis in particle physics and is well worth reading if you have any interest in the ongoing controversy over string theory. Schroer has many interesting points to make on the subject, and one of his main concerns is that a great deal of knowledge developed about QFT during the last century may be effectively lost as the training of young theorists focuses on string theory. This article has already drawn Lubos Motl’s trademark rant accusing anyone skeptical about string theory of being an incompetent crackpot.

The second of his new articles is called Physicists in times of war and begins with comments on the Iraq war and Schroer’s profound disappointment at the refusal of Witten and others to join him in a public campaign against the war before it began. The second part of the article tells the story of Pascual Jordan, one of the founders of quantum mechanics who joined the Nazi party. Schroer’s politics are diametrically opposite to those of Jordan, but he is highly sympathetic to Jordan’s scientific point of view, from the earliest years of quantum mechanics, that it is necessary to think about quantum systems in a way which doesn’t depend on starting with a classical Lagrangian and “quantizing”.

The last of Schroer’s new articles should appear on hep-th tonight and is entitled Positivity and Integrability. It tells some of the history of the QFT group at the Free University in Berlin and has a lot of interesting things to say about reflection positivity and the Euclidean approach to quantum field theory.

Update: I haven’t heard anything at all back from the arXiv about the trackback issue, but just noticed that trackbacks to the two recent Schroer articles mentioned here have appeared. The ways of the arXiv are highly mysterious….

Update: Baez has a clarification here of his response to Rovelli.

This week is the second anniversary of this weblog, so perhaps a good moment for some reflections on what has been happening over the past two years.

In many ways, the weblog has been successful far beyond my wildest dreams. My original expectation was that there would be a handful of people with similar interests who would regularly read it, and it would be quite a success if I ended up with a couple hundred readers. I don’t have completely accurate recent statistics, but recently each day at least several thousand people are checking up to see what is going on here. This is quite gratifying, and makes the significant amount of effort and time I’ve been putting into this seem worthwhile. It has been interesting to note from looking at some other blogger’s publication records that starting an active weblog seems to correspond to starting to write many fewer papers. My one regret is that the time spent on this has definitely taken away from time that could be devoted to finishing and writing up various research projects. In the future I hope to find a better balance on this issue.

One of the main topics covered on this blog, and by far the most controversial, is the ongoing story about string theory and its dominance of theoretical high energy physics. The public perception of string theory seems to me to have changed significantly recently, as more and more science journalists have started to realize that things are not going well. Many of them have moved from a stance of uncritical acceptance of the claims of string theorists to a more skeptical and balanced view of the subject. The kind of overhyped popular string theory article that was a staple for 20 years is increasingly unlikely to be written by professional science journalists. Such things now occur most often in places like university press releases, authored by people with no experience in the subject.

I’d like to think I had something to do with this, but there are much larger forces at work. The field of string theory has suffered a remarkable intellectual collapse, one that is not just a matter of opinion, but can be quantified in various ways. For many years Michael Peskin has written up a discussion of the yearly list of top cited HEP articles. I wrote up postings discussing the 2003 and 2004 lists. By 2004 there were only two post-1999 string theory papers among the list of 50 most heavily cited (the early 2002 Berenstein et. al. PP waves paper, and the early 2003 KKLT paper), and Peskin seems to have stopped writing up a discussion of the list, possibly because there was virtually nothing new to discuss. SPIRES has not yet produced a 2005 list and I don’t know if they ever intend to, but from some data gathered at physicsforums.com it would appear that the only two string theory papers likely to have accumulated the 150 or so citations needed to make the top 50 in 2005 are exactly the same two as in 2004. The subject has come to nearly a dead stop, and that rather than the complaints of its critics is behind the sense of crisis felt by many of its practitioners.

The panel discussion at Strings 2005 in Toronto was rather remarkable. For the first time, members of the audience started to raise real questions about what was going on in the subject and the panel members had difficulty in putting a positive face on the situation. It will be interesting to see if a similar discussion occurs at Strings 2006 this summer in Beijing.

The two post 2000 papers that are widely cited reflect the two main topics that string theorists are still working on. One is AdS/CFT, which many, many people work on since it is the best thing to have come out of the string theory project. There doesn’t however seem to be much significant progress in this area. The second paper, by KKLT, is the one that really launched the whole landscape business. The fact that it is the most recent hot area of activity in string theory is something that even most string theorists find very disturbing. Over the last couple years, the original implausible hopes that something could be gotten out of the Landscape have been pretty convincingly crushed. Leading figures in the field have abandoned the Landscape and moved out into the swampland of theories that have nothing to do with the real world and may or may not be low energy limits of a string theory. It remains very unclear what the point of this is.

The most active string theory blogs are becoming ever more bizarre, with increasingly strange behavior of all sorts from Lubos Motl, and Jacques Distler following the lead of others into the swampland while firmly sticking to the idea that my criticisms of string theory are some sort of illegitimate crackpotism. While most string theorists are well aware of what bad shape the field is in and casting about for something new to do, the true believers are exhibiting something more and more approaching religious fanaticism.

Unfortunately, leading figures in particle theory show no signs of being willing to publicly address the increasingly disturbing state of the subject. Part of my problem with the arXiv is the feeling of many that I do not have the stature in the community necessary to justify being allowed to make the kind of critical comments I have been making publicly. I’m willing to agree with this point, but it remains unfortunately true that those whose responsibility it is are doing little to address the situation. The whole field of particle theory is becoming increasingly damaged by these problems, and only one aspect of this is the problem of public perceptions, which is going to get a lot worse before it gets better.

I have no idea where this story is going next. The general attitude seems to be to hunker down for the next few years, try and wait out the crisis and hope that LHC results will save everything. This doesn’t seem to me to be the right way to address the serious problems that are all too obvious right now.

Update: Some anonymous person really has too much time on their hands. But I’m honored.

Update: One or more people definitely have too much time on their hands. Besides the Not Even Wrong parody mentioned above, there’s another one, and also Cosmic Variance and Lubos Motley’s Stringy Climate Theories. This last one informs us that

Recent fake blogs have brought shame to the Internet:

(1) http://motls.blogspot.com pokes fun at Dr Lubos Motl, by posting a mixture of insane climate drivel, interspersed with attacks on theoretical physicists. I can reveal it is fake.

Following up on the spectacular first year of data reported by the WMAP experiment in February 2003, results of analysis of the next year’s data were initially planned to be released a year later. The release of this data has been repeatedly delayed; for speculation about why, see here and here.

Over the last two years there have been a large number of scheduled colloquia by WMAP scientists that have been cancelled at the last moment. One relatively recent one was an astronomy colloquium at Caltech by Gary Hinshaw with the title “New Results from WMAP” that was initially scheduled for January 4, but was cancelled and now is scheduled for March 22.

From March 23-25 the new Center for Cosmology at UC Irvine will be hosting a workshop on Fundamental Physics With Cosmic Microwave Background Radiation. On the 23rd four WMAP team members are scheduled to speak with titles: “WMAP 0, WMAP I, WMAP II, and WMAP III.”

Over at CosmoCoffee (where I first noticed this), Alessandro Mechiorri is spreading the rumor that data will be released next week, on March 14. There’s also discussion of this at the Bad Astronomy and Universe Today Forum. So, looks to me like it’s maybe next week, and if not, almost certainly the week after.

Update: More news about the state of WMAP from Urbano Franca here.

Update: Looks like it definitely will be very soon now, possibly some time this week. The WMAP Mission Status page says:

Second Data Release

While the first-year results were based mainly on temperature measurements, the continued mission operations are now primarily focused on the much weaker polarized signals – an invaluable “stretch” goal of the extended mission. Analyses of these weaker signals are more difficult. The calibration and systematic error analyses have been completed, and the data files have been documented for use by researchers. For an overview see RESULTS.

This last link is to a New Three Year Results page which right now just says:

Stay tuned for the release of the most recent results from the Wilkinson Microwave Anisotropy Probe (WMAP). Very soon now….

Update: It’s official, the release will be on Thursday. Here’s the announcement:

Dear colleagues:

Sincerely,
Gary Hinshaw
NASA/GSFC
for the Legacy Archive for Microwave Background Data Analysis (LAMBDA)

Several blogs today have discussions of the arXiv trackback issue, mostly spawned by Sean Carroll’s posting on the topic.

Jacques Distler has a posting where he explains that the arXiv has instituted an ill-defined “active researcher” criterion for allowing trackbacks to blogs and that:
Peter Woit’s publication record doesn’t put him anywhere close to “active researcher status”
I’ve written an extensive comment over there about why I happen to think I am an active researcher and the evident absurdity of the idea the Jacques Distler is capable of making a rational evaluation of this question.

More discussion of this is at Chad Orzel’s Uncertain Principles, and Georg von Hippel’s Life on the Lattice.

Update: Yet more on trackbackgate from Lieven le Bruyn , Evan Goer and Capitalist Imperialist Pig. The first has the useful suggestion of using Technorati to automatically generate complete sets of links to discussions of arXiv papers on blogs. The second reminds me why it’s a bad idea to hit the “submit” button when you’re extremely pissed off.

Update: In discussion over at Jacques’s blog about what an “active researcher” is, the dicey issue has arisen that Jacques actually doesn’t seem to be one himself. One commenter has suggested that this whole issue could easily be resolved by just picking a definition of the term, noting that

Few will object to defining a minimallly active researcher as one who has posted an average of 2 papers per year to arXiv over the last 3 years.

Jacques comes no where near qualifying as “minimally active”, since he has only posted 3 papers to the arXiv during the last 3 years.

Personally I don’t think the 2 paper/year criterion is very good. It doesn’t account for length of papers, or that they may be the product of a collaboration, so the author in question is only responsible for a fraction of the paper. A more accurate measure would be based on counting pages of papers and dividing by number of authors. Under this measure, over the last four years Jacques’s research productivity looks like this:

2002: 9.3 pages
2003: 3 pages
2004: 0 pages
2005: 23.7 pages

for an average of 9 pages/year (this count is being a bit charitable, since 15 of the 2005 pages are from a “landscape” paper that may not even be science).

Jacques has made it clear that a certain author for whom this number is 14 pages/year is not “anywhere close to ‘active researcher’ status”, so I guess he is even farther away from qualifying as an “active researcher”.

Always seems surprising the way people living in glass houses like to throw stones…

Update: This particular food-fight has even been written up for the on-line component of Discover Magazine.

Update: A couple more people weigh in on this, Jim Hu and Alejandro Satz.

Update: I haven’t heard anything at all from anyone associated with the arXiv, but a couple trackbacks to one of my recent postings have appeared, so there seems to have been some sort of change of policy there.

Harvard mathematician Barry Mazur has many new things up on his web-site. These include an expository article on motives (this via David Corfield), and a foreword to a forthcoming popular book called Fearless Symmetry : Exposing the Hidden Patterns of Numbers. This book looks to be the first popular book to deal with the modern use of group representations in number theory, explaining what reciprocity laws are and a bit about the Langlands program.

The concept of a motive and that of using representations of Galois groups constructed using things like motives are two of the most important ideas in modern number theory. Some of the latest developments in this field concern extensions of the Langlands program involving p-adic modular forms. Mazur and Buzzard are teaching courses on this topic, and Mazur has put some lecture notes up on his course web-site. These courses are part of a special semester on Eigenvarieties at Harvard.

Mazur also has a revised version of his expository piece on category theory, a short piece about Serge Lang, and some very non-basic notes for a “Basic Notions” seminar.

Nature has a short article entitled Physicists told to confront those big questions about the Foundational Questions Institute call for proposals. There’s a very positive quote about this from Lee Smolin, who is on the advisory board, but also a much more skeptical one from Paul Steinhardt: “Metaphysics is running rampant through string theory and cosmology,” he says. “I would like to see things go a little bit in the other direction.”

Kimball Martin’s web-site of Exceptional MathReviews includes one by Robert Oeckl about a paper of the Bogdanovs. For more about them see here, here, here, and here. Remarkably, they seem to have some support from at least one string theorist.

Via Bitch Ph.D., perhaps the strangest math-related web-site I’ve ever seen.

The High Energy Physics Advisory Panel (HEPAP) is meeting today and tomorrow in Washington. Presentations there will include one from Bush’s science advisor, John Marburger, and should be available on-line soon.

This weekend, the Mathematical Sciences Research Institute (MSRI) will be dedicating its new building, named after Shiing-Shen Chern. As part of the festivities, Roger Penrose will be giving talks, including a public lecture Sunday on Fashion, Faith and Fantasy in modern theoretical physics.

The second LHC Olympics were recently held at CERN and the talks are available on-line. This is a rather unusual exercise designed to get string theorists and other not-so-hardcore phenomenologists involved in analyzing simulated LHC data. There seem to me to be two big problems with this. First of all, there are no backgrounds in this simulated data, and understanding these backgrounds is going to be the main problem with the LHC data for quite a while. It will be the experimenters who will have to do this, and they may need help from theorists, but help of a very different nature than what this exercise is aiming at. Secondly, once backgrounds are understood and potential signals are extracted, I doubt that the LHC experimenters will be releasing the kind of data simulated here for use by theorists. I suspect they’ll be doing the kind of analysis going on at the LHC Olympics themselves and releasing the results as papers under their own names. For more about this, see postings by Lubos here and here. The first of these drew the following comment from a European phenomenologist:

Phenomenology has been always been strong in Europe, hundreds of ppl work in this field since decades, and most consider this contest as child’s play. Guess why no European team took part in this activity, right within a truly European institution which has scores of local phenomenologists? It is a bit like if a few phenomenologists decide to learn string theory and organize a contest in Princeton about who can build the best string model….

While this exercise is unrealistic, it may at least clarify various issues about how testable certain specific scenarios really will be at the LHC.

The latest Seed Magazine has some interesting articles. One about mathematical proof discusses problems with proofs in mathematics that may be too complicated to be properly refereed, especially the recent work by Thomas Hales on the Kepler conjecture. It ends with a depressingly silly comment by Keith Devlin:

I see a parallel between the uncertainty of these proofs and developments in physics like string theory, where we’re developing mathematical theories of matter that may forever remain elusive to experimental verification.

This is the same kind of foolishness as the comment that “physicists may have to rethink what it means for a theory to explain experimental data” because of string theory (see here).

Another Seed article that has gotten a lot of attention because of it’s topic is one called Getting Physical about physicists and sex. See commentary here, here and here. This last link is to Jennifer Ouellette’s new blog Cocktail Party Physics, which is of independent interest.