This Week’s Hype

Today’s Newsday has a long article by Michael Guillen about the significance of the new Simons Center at Stony Brook. Guillen is a theoretical physicist who was the science editor at ABC-TV for fourteen years, and now is the host of “Where Did it Come From?” a science and technology show on the History Channel. According to Guillen:

Once upon a time, physics likened the tiniest imaginable whit of matter to a geometrical point that, strange as it sounds, theoretically has no dimension: no width, length or depth. But experimental research into protons, neutrons and other elementary particles led physicists in the late 1960s to argue that a subatomic particle behaves not like a point, but a string – a geometrical line segment, with length but no width or depth.

This stupendous hypothesis was followed by another in the 1990s, when physicists discerned in string theory resemblances to an 11-dimensional version of Einstein’s hallowed theory of gravity.

All of this and more has left scientists deliriously optimistic that in string theory – the latest, greatest offspring of geometry and physics – lies the makings of the long sought-after “theory of everything.”

Besides promoting the current delirious optimism about string theory among physicists, Guillen also makes a living as a motivational speaker and promoter of religious faith. His most recent book, Can a Smart Person Believe in God? tell us that

After the recent, unexpected appearance of something called string theory, science appears to be in the midst of changing its mind yet again. It’s not proposing we live in a universe that has ten or more dimensions!…

As we’ve seen, all the evidence indicates that science is not converging smoothly and consensually upon one firm, reliable understanding of the way our world began or how it operates.

As a guest on the 700 Club, Guillen explained that one of the three things that led him to his religious faith was

2. That if a person can believe in black holes and multiple universes, then it would be no big deal to believe in God.

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Fleinhardt Hits a Roadblock

Larry Fleinhardt, the fictional Caltech string theorist in the TV show Numb3rs, has decided to give up on string theory for now and become a phenomenologist. According to the show’s co-writer Nick Falacci:

Like real-life physicists, Fleinhardt hit a roadblock trying to create an 11-dimensional supergravity theory.

So, he will be joining the DZero collaboration at the Tevatron and work on the search for the Higgs. According to Fermilab Today, an office for Fleinhardt at Fermilab has already been created.

It’s not clear if Ed Witten or his brother Matt had anything to do with this…

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New LHC Schedule

This week is a “CMS week” at CERN, and talks are available here. The plenary talk discussing the LHC status has:

If all goes well the machine should be cold by 1 June, and protons could be injected by mid-June. Use this information for laying out our schedule…

Poking around the LHC website, lots of other information is available. A draft general schedule from last week can be found here. It has cooldown of the last sector (4-5) ending in mid-June, and powering tests on-going at several sectors until mid-August. Plans from last year for commissioning the beam envision 30 days with beam to go from first injection to usable 7 TeV beams, with an estimate that this would take 60 calendar days. So, most optimistically, it looks like mid-late October is the earliest that 7 TeV collisions could be happening, right around the date of the official inauguration: October 21. More realistically, this may very well take until early 2009.

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Rock Guitars Could Hold Secret to Universe

From the Bolton News:

ROCK guitars could hold the key to the origins of the universe, hundreds of young science pupils were told.

The Institute of Physics held a lecture in Bolton entitled “Rock in 11 dimensions: where physics and guitars collide”.

And acoustics physicist Dr Mark Lewney told more than 600 youngsters who attended that the vibration of guitar strings may answer unsolved questions about the Big Bang.

This event is just one of a year-long lecture series promoting string theory at schools throughout Great Britain. According to the promotional material the LHC will help verify string theory experimentally (and it will start up in May….).

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Simons Center for Geometry and Physics at Stony Brook

Today here in New York City there will be a formal announcement by governor Eliot Spitzer of a gift by Jim Simons of $60 million dollars to fund a new research center at SUNY Stony Brook, to be called the Simons Center for Geometry and Physics at Stony Brook. Simons already made a donation of $25 million dollars to Stony Brook back in 2006 to support math and physics, with the idea of getting such a center off the ground. People there had told me last year that they were expecting Simons to fully fund an expensive new center with a new building once they had managed to find a suitable director, and recently I had heard that string theorist Michael Douglas had accepted the director’s position.

This is the largest gift ever made not only to Stony Brook, but to any of the institutions in the SUNY system. Besides the building and the position for Douglas, it is supposed to fund 30 visiting positions and presumably a sizable number of permanent positions in mathematics and physics (the 2006 gift also is supposed to pay for such positions). The scale of this should make the Simons Center among the best funded institutions in this field. Job prospects for string theorists have just improved significantly…

For more details see stories from the New York Times, Newsday, and Crain’s Business Report.

Update: More here.


Update
: More in the New York Times here. The $60 million includes the previously announced $25 million, and will pay for a new building as well as an endowment of $40-45 million. The endowment will fund the director’s position, 6 more permanent positions, and 30 postdocs and visiting positions.

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Peter Goddard on the Birth of String Theory

Last spring there was a conference held in Florence which brought together many of those who worked on dual models and string theory during the late sixties and early seventies. Slides from the talks are here, and many of the speakers have written up contributions that have been posted on the arXiv. The latest of these is From Dual Models to String Theory, by Peter Goddard, who now is the director of the IAS in Princeton. It contains a detailed description of what he remembers of those early days when people were trying to sort out the significance of the Veneziano amplitudes and how to consistently quantize the string. Goddard also has some interesting remarks on the rapid changes in fashion during those years, and some excerpts follow.

On his student days at Cambridge working under Polkinghorne during the late sixties:

I, and nearly all my fellow research students, worked on strong interaction physics. (One of us was trying to work out the correct Feynman rules for gauge field theories, but this tended to be regarded as a rather recondite or eccentric enterprise.)

At a summer conference in 1971:

For me, it was a memorable meeting and one particular vignette has stuck in my mind as an illustration of the prevailing attitude towards the use of modern mathematics in theoretical high energy physics. A senior and warmly admired physicist gave some lectures on the Regge theory of high energy processes. With great technical mastery, he was covering the board with special functions, doing manipulations that I knew from my studies with Alan White (who was also at the School) could be handled efficiently and elegantly using harmonic analysis on noncompact groups. Just as I was wondering whether it might be too impertinent to make a remark to this effect, the lecturer turned to the audience and said, “They tell me that you can do this all more easily if you use group theory, but I tell you that, if you are strong, you do not need group theory.”

About his years (1970-72) at CERN:

The two years I had spent in CERN had built up to an crescendo of intellectual excitement and, though I have found much of my subsequent research work gripping and often extremely satisfying (when teaching duties and the largely self-inflicted wounds of administration have permitted), nothing has quite matched this period. In particular, I had the privilege of working closely for seven or eight months with Charles Thorn, whose combination of deep perception and formidable calculational power had provided the basis of what we managed to do. And, the exhilarating combination of the open and cooperative atmosphere that prevailed amongst (almost all) those working on dual models in CERN, the relative youth of most of those involved, the sense of elucidating a theory that was radically different, even the frisson of excitement that came from doing something that was regarded by some of those in power as wicked, because it might have nothing directly to do with the real world – this cocktail would never be offered to me again.

About the situation in 1973-4 , after the discovery of asymptotic freedom:

By the end of 1973, as the fascination of dual models or string theory remained undimmed, though with ever increasing technical demands, the interest of many was shifting elsewhere. On 21 December, David Olive wrote to me, “Very few people are now interested in dual theories here in CERN. Amati and Fubini independently made statements to the effect that dual theory is now the most exciting theory that they have seen but that it is too difficult for them to work with. The main excitement [is] the renormalization group and asymptotic freedom, which are indeed interesting.”

In Berkeley [summer 1974], I wrote a largely cathartic paper [76] on supersymmetry, which probably helped no one’s understanding, except marginally my own. It had one memorable effect: namely, that when I reached Princeton I was invited to give a general seminar on supersymmetry, which most people did not know much about then. When I said I would rather talk about string theory, my offer was politely declined on the grounds that no one in Princeton was
interested, a situation that has changed in the intervening years. Somewhat put out by this response, I did not give a seminar at all.

About his decision in 1975-6 to work on gauge theory rather than strings:

I started to realize that following my interests in strings or dual models might be a fine indulgence for me, but it was not going to help my students get jobs. (One of the great attractions of Cambridge at the time was that chances for promotion were so slim – Jeffrey Goldstone was still a Lecturer – that one did not need to be distracted by the prospects for advancement: they seemed negligible.)

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Quick Links

There seems to be a political scandal going on in Italy revolving around the GIM mechanism, with Antonino Zichichi somehow involved. Definitely a higher level of scandal than we have here in the US.

An Oral History Project at Princeton involving interviews with people associated with the Math department during the 1930s is here, and includes the following exchange with Wigner, who evidently wasn’t so happy with Weyl:

Interviewer: We haven’t mentioned Hermann Weyl yet. Can you tell me something about your relations with him? When did you first get to know him?

Wigner: When he came to Princeton I knew about his work, and I quoted it also. You know he was interested in group theory. But in Princeton we were really strangers to each other. He never mentioned my work in his book on the application of group theory to quantum mechanics, even though practically all that is in the book was contained in publications by me and in joint publications by Johnny von Neumann and me. I resented that because I needed a job then.

The TLS has a review of The Trouble With Physics.

For the latest from the frontiers of physics, see this at the KITP, and this at the arXiv.

There’s a P5 meeting going on at SLAC, talks here.

Bert Kostant of MIT gave a talk at UC Riverside entitled On Some Mathematics in Garrett Lisi’s ‘E8 Theory of Everything’, and as part of the festivities John Baez gave an elementary introduction to E8. There’s some discussion of this at his blog. It seems that the initial reaction from some string theorists that this material is so easy that undergraduates shouldn’t have too much trouble with it may have changed a bit. For a comment on the attitudes involved, see here.


Update
: To try and make up for the high-level of snarkiness of this posting, here’s something else. This month’s National Geographic has an excellent big article about the LHC, with the usual National Geo impressive photography. No hype about extra dimensions, etc., just a serious explanation of what the LHC is all about and what physicists are trying to do, ending with the following wonderful quote:

…I asked George Smoot, a Nobel laureate physicist, if he thinks our most basic questions will ever be answered.

“It depends on how I’m feeling on any particular day,” he said. “But every day I go to work I’m making a bet that the universe is simple, symmetric, and aesthetically pleasing—a universe that we humans, with our limited perspective, will someday understand.”

Update: Two more

  • FQXI has Phantasms of Infinity, an article on the Boltzmann Brains/counting universes hot topic among theorists. It includes an actual picture of a Boltzmann Brain, as well as a quote from Vitaly Vanchurin, who works in this area:

    Without a way of calculating probabilities, cosmology is a dead science, it doesn’t exist.

    I think this will be news to most cosmologists, who are happily ignoring the problem of how to count universes in the multiverse. More accurate would be “Without a way of calculating probabilities, multiverse studies is a dead science, it doesn’t exist”, which is pretty much the situation now and for the forseeable future.

  • New Scientist has a reasonably good cover story on cosmic strings. It ends with

    Discovering them would be really big news. String theory has often been criticised as a theorists’ plaything, a pretty piece of mathematics unable to make any testable predictions. That perception would change pretty fast if we were to find a host of giant superstrings crisscrossing the skies.

    This is an accurate summary of the situation, although it might be worth pointing out that not only is there no evidence for cosmic strings, but there’s not even anything ever observed that cosmic strings provide a compelling explanation of. At the moment they’re just a pretty pure example of wishful thinking. Sure tomorrow someone may find a “host of giant superstrings crisscrossing the skies”. It’s also true that tomorrow aliens may land and explain to us how to compute the Standard Model parameters from superstring theory.

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    US HEP Demography

    Late last week there was a meeting of HEPAP in Washington, presentations available here. Several dealt with the current budget situation, which is basically that the current FY2008 budget is a disaster, and the Bush administration has proposed huge compensatory increases for FY2009. No one seems to have any idea what Congress will do or when, so the future for US government support of HEP is completely unclear not only for the long-term, but even for the next fiscal year, which starts in a few months.

    The NSF presentation noted that NSF funding for particle physics theory was down 4% in FY2008, to about $14 million, of which roughly $1.5 million goes to the KITP at Santa Barbara. The critical issues for the NSF particle theory program were listed as:

  • Need to involve more people in LHC-related physics.
  • Need new hires in phenomenology.
  • Traditional funding sources for students (being TAs) is becoming problematic. (need more funding for students)
  • You can see why string theorists these days are pushing the idea of “string phenomenology” and claims that somehow string theory is relevant to the LHC.

    At the DOE, funding for theoretical particle physics was flat for FY2008, at $60 million, with a proposed 5% increase for FY2009.

    There was also an interesting presentation about an on-going project to gather demographic information on the people working in particle physics. I was surprised to see that statistics show significant recent increases at all levels in the numbers of people working in particle physics. From 2003-2007 the number of graduate students went from 1129 to 1335 (making one wonder why the NSF is worried about not supporting enough graduate students…), postdocs and untenured research staff from 1331 to 1406, untenured faculty from 228 to 284, and tenured faculty or staff from 1343 to 1355. In particle theory, the total number of people went from 1292 to 1414, so this increase in numbers was not all in experiment.

    Also worth reading is a presentation from Robert Sugar about the present state of Lattice QCD calculations.

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    LHC Startup News

    I’m a bit confused about the situation with the LHC start-up schedule, maybe someone well-informed can help. Here’s what I’ve seen recently:

    At the AAAS meeting last Friday, there was a session on “Big Science”, which included discussion of the LHC with Robert Aymar, the CERN director general. Alan Boyle, at MSNBC, reports:

    June was the time frame Aymar had in mind when he was asked about the start-up schedule during a Friday session on large-scale science project. But during a follow-up chat, he pointed out that you can’t just press a big red button one day and expect each of the collider’s beams to hit full power of 7 trillion electron volts immediately…

    Aymar said that buildup could still start around May 21 or 22, with tests continuing for weeks after that. His aim is to have the collider conducting scientific experiments this summer.

    One thing that is definite about the schedule is that there will be a ceremonial inauguration of the machine on October 21, with a wide variety of dignitaries present, include French president Sarkozy.

    It’s not clear what phase of the start-up Aymar had in mind when he was referring to June, and the idea that the machine will be doing physics this summer seems hard to reconcile with information available publicly about how the things are progressing. For an official schedule from last August, see here. The current one, from October, is available here. Both schedules have beam commissioning beginning May 15, and taking about two months, so physics in July.

    The LHC is divided into 8 sectors, and each sector must go through a process of flushing, cooling down to 1.8 K (which takes a month and a half), and powering tests of the magnets. The powering tests are crucial to make sure that the magnets can quench safely, dissipating the energy contained in a magnet that leaves the superconducting state unexpectedly. According to the schedules, the powering tests should take 2-3 months, and can start only once the magnets are cool. So, from beginning of cooldown to the point that a sector is ready to try and use should be a process of about 4 months or so. So, for mid-May beam commissioning, all sectors should be cool by around now and starting powering tests soon.

    One can follow the actual state of affairs here. One sector (45) is cool and undergoing powering tests, but this sector still has not had its inner triplet magnets fixed, and the plan is to warm it back up before doing this, after which it will need to be cooled down again. Cooling of 3 other sectors has begun, but has been stopped in two of these to make repairs, with cooldown to resume in week 9 of the year for one sector, week 11 for another. Of the four other sectors, cooldown is supposed to start in one of them during week 15 (mid-April), dates are not given for the others. With respect to last August’s schedule, the current situation is roughly 4-5 months behind where it is supposed to be. This would suggest that, if all goes well from now on, beam commissioning would begin mid-September. Perhaps there was some slack in that schedule, and things could happen faster than planned, but I’m just not seeing how physics this summer is in the cards for the LHC. Most likely scenario seems to be a big push to get some a beam of some sort stored in the machine in time for October 21 and the big ceremony.

    Posted in Experimental HEP News | 2 Comments

    Late Night HEP TV

    Particle physics is enjoying a wave of popularity on the late night talk shows this week. On Friday, MIT experimentalist Peter Fisher appeared on the Conan O’Brien show, helping O’Brien see how long he could keep his wedding ring spinning on his desk.

    Last night it was a theorist’s turn, with Lisa Randall appearing on the Colbert Report, promoting the idea of extra dimensions.

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