Exploring QCD in Cambridge

exploring qcd sign

So the conference here at the Newton Institute in Cambridge is simply marvellous. I’m so glad I came, and so happy that I was invited to attend and make a contribution to it by giving a talk and having discussions. It’s a rather splendid combination of experimentalists, phenomenologists, and various hardcore theorists of various sorts, and there are ideas just flying around and bouncing off the walls. The title is “Exploring QCD: Deconfinement, Extreme Environments and Holography”, (it’s organized by Nick Evans, Simon Hands, and Mike Teper) and the focus is very much the fascinating nuclear physics of heavy ion collisions at the RHIC experiment at Brookhaven, and the experiments to come on heavy ion collisions at the LHC at CERN. The latter is an aspect of the physics to be done at the LHC that you don’t hear about much because it is sidestepped in favour of discussions about the Higgs, origin of mass, supersymmetry, theories of everything – such as strings, microscopic black holes, extra dimensions and all that other good stuff. (See earlier discussions here, here and here.)

Well, the great thing is that there’s been plenty of discussion of black holes, extra dimensions, strings, and so forth at the conference because of a great deal of promise of its relevance to nuclear physics. It’s been right alongside the discussion of experimental results, and other theoretical approaches such as work on computer simulations of aspects of QCD (“lattice QCD”) and studies involving other techniques. There’s very much a spirit of open-minded exchange among all the various parties […] Click to continue reading this post

So in SEED…

seed august coverMy hand hovered over the August issue of SEED last night in the magazine section of a bookshop. I was not really sure whether I was going to buy it or not, to be honest. Then I glanced through, and two things made me go for it. The first was seeing that there’s something on Chuck Hoberman. I love his designs and constructions, and am dismayed by the fact that they are not just everywhere in our cityscapes. The second was a photograph. There’s some extracts from the collection of photographs of Nobel Prize winners […] Click to continue reading this post

Happy Higgs Hunters

There’s another article about the search for the Higgs particle, the recent rumour kerfuffle involving the Tevatron, and the upcoming LHC experiment at CERN. (See related articles at bottom of this post.) This time it is in the New York Times and it is by Dennis Overbye. There’s a bit of discussion about how the fact that there are physicists blogging about these topics tends to amplify some things that might not (or should not?) get amplified otherwise. I’ve nothing really to add to the discussion, except to say that it is far better written -showing better understanding of the science, and the scientific implications of the rumour- than the article in Slate, by James Owen Weatherall, that I criticizedin an earlier post . Ironically, Weatherall is a recently trained (in particle physics) scientist. Go figure. To be fair, Overbye has the benefit of a long wait for the rumours to die down and reality checks to be done (and lots of good journalistic experience under his belt, and maybe a bit more seniority to fight with his editors, if that was part of the issue for the Weatherall article), so we all hope Weatherall will get better with time. (Above right: A random collision event I grabbed from the DZero experiment.)

See some other posts on this article here (starting with Gordon Watts laying down a […] Click to continue reading this post

The Man of Tomorrow?

[Updated with a bit of video!]

Earlier this week I went for a walk with Nick Halmagyi to chat about physics, and since he had not been down to the meadows and gardens over by the neighbouring Aspen Institute, we wandered down that way. It was just after lunchtime, and a very hot day, and as we got near the Institute, we diverted away from physics so that I could tell him briefly what the significance of the Aspen Institute is. I explained that it was an important “think tank”, host to thinkers in the humanities, sciences, and diplomats, presidents, ex-presidents, and other dignitaries, who come and think great thoughts about the problems of the world. Well, let me use their own words from their website:

The Aspen Institute, founded in 1950, is an international nonprofit organization dedicated to fostering enlightened leadership and open-minded dialogue.

As an example, I explained, it is probably the sort of place that Al Gore might have come to in order to think deeply about the environmental issues he champions. It is nice that the Aspen Institute is right next to the Aspen Center for Physics, and the two organizations, while now independent (but the Center actually grew out of the Institute, see here) sometimes work together on various matters including public outreach. The public lecture I gave here last year as part of the Heinz Pagels Memorial Lecture series (see e.g. here and here), for example, was actually over in the Paepke auditorium, one of their buildings.

We approached the main grounds of the Institute, near their residence buildings, and were greeted by a most frustrating -and ironic- sight. Their sprinkler system was fully on, spraying water unnecessarily into the air and onto the asphalted walks, with some making it onto their lawns, where even there it would mostly evaporate (in addition to aiding the hot sun in scorching the grass somewhat). For once, I did not have my camera and so cannot share this horrible sight with you. For a moment it was as though I was back in LA, but this was Aspen, where everyone talks about the environment. Then I remembered – everyone talks about the environment. At the same time, there are more and more SUVs every time I come here (rental companies even try to force SUVs on you when you try to rent a regular compact car – did you read my story of that last year?), more and more land seems to be cleared to build ever-larger houses, and so forth. On the other hand, bicycle use is very high here, there’s an excellent free bus system, an enforced reduction of individual car access to the Maroon Bells wilderness area, and I imagine several other worthy environmental efforts that I have not seen are being made. So it is a tale of two communities and mind sets. It’s complicated, as with any populate. But you’d have thought the Aspen Institute would be “fostering enlightened leadership” by not watering their lawns and (sidewalks) with vast amounts of water at the maximally worst time of day to do so in terms of effectiveness. (Frankly, given the environmental disaster most lawns are, one could go further and hope that in the spirit of leadership, they’d turn more of their expanse of lawns into other use, perhaps expanding the excellent wildflower garden they have in one corner, or letting more of the surrounding meadows repopulate the grounds. It could be rather beautiful.)

wild flower gardens at aspen institute

Anyway, we shook our heads at the irony of the sight and we wandered off toward the river, continuing our chat about matters in other dimensions (no, really). The next day I came back at that same time to check the sprinklers again (with camera), since such systems are often on timers, but had it rained very heavily the previous night and so -happily- it did not seem that the sprinklers had been used.

On Wednesday I returned once more. The sun was overhead and strong again (not as much as Monday) and the main system was not on. But once again I noticed signs of watering, and saw a smaller component of the lawn being watered by a hose-driven system. I now think that it might be that they were sprinkling (well, gushing) on Monday (and partly on Wednesday) in the mistaken belief that pouring water (and into the air, where it rapidly evaporates) on the lawn while the sun is baking it will somehow help, and they did it on an ad hoc basis, but I can’t be sure. Either way, it is a terrible waste of water resource by an organization that is committed to leadership in matters of importance, such as the environment.

Then I noticed that many people wearing name badges were heading from the Institute toward the direction of the auditorium and the Aspen Music tent. This fit with the next deliciously ironic thing: Al Gore was going to be talking! He’d been at the Aspen Institute (I’d no idea of his presence or the event until a radio announcement on Wednesday morning), and the sprinkler matter, this was remarkable. Convenient, one might say.

It turned out that it was not taking place in the Paepke auditorium, as I thought it […] Click to continue reading this post

LHC Podcasts: Science Meets Science Fiction

Confession: I’ve no idea what Torchwood is, and I find the current Dr. Who shows annoying overall (there have been some good episodes that I’ve seen, but they’re swamped in a sea of such poorly thought through and simply phoned-in crappy episodes that I find it too annoying to take the risk of wasting an hour I could have better spent with my head in the oven…) Feel free to disagree with me, and I have not seen the most recent season, so maybe things are better.

LHC You TubeBut anyway, where was I? Oh, right. Someone called John Barrowman (apparently one of the stars on those shows? He plays a scientist? I honestly don’t know, but you will, if you’re a fan) took a visit to CERN (the particle physics lab in Europe you often read about here and elsewhere) to better inform himself about the intersection between science and science fiction. One of the resulting jumpy noisy and (reportedly) fun videos can be found on YouTube here. There are some somewhat interesting animations alongside some of the, er…jolly madcap fun, illustrating the physics. Following the particles along the beam-pipe to the collision is not a view I’ve seen before, I’ll admit.
Much more interesting is something they mention at the end. A series of podcasts on the LHC (the big experiment at CERN we’re all interested in and excited about). This is driven by Brian Cox (no, not that one, this one, the physicist), and seems to be in a […] Click to continue reading this post

Roz Chast On Physics

I learned from Often in Error that Roz Chast, whose work some of you may know from the New Yorker, had some physics-themed cartoons in the May edition of Symmetry Magazine (one of them the cover). Here they are (click for larger):

  roz chast on physics   roz chast on physics

I like the one on the left, I have to say. (A pseudoparticle called “poserino” is just […] Click to continue reading this post

Reality Calls

american inventor logoIn a bizarre twist, after a satisfying day of calculating I switched on the television, accidentally pressed a wrong number, and ended up on ABC just as a program called “American Inventor” was starting. I’m not really up on all these “reality” format shows, so I’ve no idea how long this has been in existence, but I must say that it was good to see a program in this format that was primarily about using one’s brain, inventiveness and engineering/construction skills! The format is a bit too gimmicky for my tastes (I’m not partial to all the forced drama and overwrought background music), but that’s probably because I don’t watch much of this sort of thing, so I probably won’t be a regular viewer. But again I must say it was good to see that such a show exists. Perhaps there are more that I don’t know about. It seems that I just saw the phase where they filter out all the silly ones (and goodness were some silly!) and pick the finalists from each city who get $50,000 worth of development money. They did LA and SF in this show, and apparently they’ll be doing the North East next. Questions you might be able to help me with: Do all these shows have a British judge on the panel to play a sort of mean guy? Is it a sort of requirement? The one other such show I’ve seen, American Idol, has that, and like a good theorist I am extrapolating wildly from two data points.

logo for design squadSeeing a reality show based on some intellectual skill actually reminds me. Even though I got a reminder from some of the people behind the show, I’m embarrassed to say that I completely forgot to tell you about the show on PBS for youngsters aged 9 – 12 called “Design Squad”. From the “about” part of their site:

Borrowing from the hugely popular reality competition format, DESIGN SQUAD is aimed at kids and people of all ages who like reality or how-to television. Its goal is to get viewers excited about engineering!

Over 13 episodes, eight high school contestants tackle engineering challenges for an actual client—from building a machine that makes pancakes to a “summer sled” for LL Bean. In the final episode, the top two scorers battle for the Grand Prize—a $10,000 college scholarship from the Intel® Foundation.

I think it has now concluded, but you can watch all 13 episodes online here. Did anyone see it? (I did not.) What did you think? You can get more involved with Design Squad by following up on this part of their website.

Design Squad was co-sponsored by the IEEE, which is excellent to see. So will the American Physical Society (and other science societies) be doing something similar, one wonders? It’s a potentially good way of getting people interested in participating in science – on prime time television. We could, for example, have members of the […] Click to continue reading this post

Hunting the Higgs is not a (D)Zero Sum Game

D0 data shotWriting in Slate magazine, James Owen Weatherall seems a little confused about how particle physics works. Based on a rumour that there’s a new and significant signal seen at the DZero detector at the Tevatron at Fermilab (Illinois), one of the article’s titles is “Why the rumored discovery of the Higgs Boson is bad news for particle physics”. Supposedly, the big new machine, the Large Hadron Collider (LHC – see more about it here, and what physicists are hoping for from it), about to switch on later this year, would have nothing to do, and would be a waste of billions of dollars. You can read about the original rumour here.) (Above right: A random collision event I grabbed from the DZero experiment.)

Well, this is wrong for so many reasons. It is hard to know where to start with this. The major fallacy with the whole thing is that these machines are just somehow discovery devices (in the most naive sense) of some sort. You build it, switch it on, see what’s there, write the paper and the press release (not necessarily in that order) and then you’re done. Completely neglected is the notion of such an experiment as a device for […] Click to continue reading this post

Masterclass, II

Don’t forget to catch the latest installment of Joe Polchinski’s rather thorough deconstruction of the nonsense, obfuscation, selective memory, and other confusions that constitute the bulk of Lee Smolin’s attack on string theory.

All the points I’ve had the energy to raise have been made here on Asymptotia […] Click to continue reading this post

LHC Coverage

CMS at LHC NYTimes

One of the Large Hadron Collider’s detectors, the Compact Muon Solenoid (CMS).

As you gather a lot when there are discussions on the topic here and elsewhere, there’s a lot of excitement and anticipation among high energy physicists about a number of things. I would go as far as to say that we are already in a very rich experimental time for results pertaining to high energy physics (or, if you insist, “fundamental physics” issues (I have in mind, for example, all the wonderful cosmological and astrophysical data that continues to come in, with more to come), and it is set to possibly get much richer – maybe even a new Golden Age with a little bit of luck – when the Large Hadron Collider starts producing results. We are really going into the (relative) unknown with this experiment, and this will be a great time to be working in the field – with a little luck, as I keep repeating.

A number of substantial articles have recently appeared in the general media that give you a good sense of what is going on, more reasons (and more detail) for why there is […] Click to continue reading this post

Chocolaty Book Fun

Ah yes, it is that time of year again. The LA Times book festival is on, starting today, and it was kicked off with the swanky Book Awards festival last night, followed by a reception. This all takes place on the UCLA campus, in Westwood. You might recall that I went last year and reported on it. [(Update: A version of the post is here.] (If in town, go to the LA Times website for more information and find your way over there either today or tomorrow!)

So I went to the Awards show again because:

  1. I enjoyed it last year,
  2. I like “book people”,
  3. I like the idea that in the city where there’s a swanky Awards ceremony for everything else, they have one for books,
  4. I like the unashamed delight that everyone takes in the value of the word on the page… there were some very nice speeches from the master of ceremonies (Jim Lehrer this year) and the various presenters in each category (all authors themselves) about the various aspects of this (all the way from history to Children’s books, to Science…)
  5. I wanted to see if they would have chocolate fountains again. They did.
  6. I wanted to see if they had old typewriters embedded inside ice sculptures again. They did.
  7. I can never be mistaken for an actual author at the reception too many times,
  8. I like dressing up, from time to time. (Never let it be said that I am not honest with you on this blog.)

book prizes   book prizes

(Above: MC for the night, PBS Newshour host Jim Lehrer, and the LA Times’ Kenneth Turan, on the set/stage. I really like the work of both of these guys…)

Spent most of the evening after the ceremony at the reception talking with LA Times (or related) people and their spouses. This was not my intention, but it was a happy occurrence, as they were all really interesting people – two science writers (Rosie Mestel and Alan Zarembo, who I’d not met before and who were just great to talk to) and also some more general columnists, such as (novellist and essayist) Meghan Daum and others whose names escape me now. K C Cole, my friend and USC colleague – and ex-LA Times science writer – was there for good conversation, as was Tom Siegfried. So it was just excellent to stand around and munch on the excellent food, drink the wine, and talk (and yes, sometimes gripe) a bit about science coverage and science writing. Briefly chatted with poet and author Michael Datcher (remember him from the point of view event?) and his wife as well, who told me about an upcoming event I’ll be mentioning later, I hope.

Rosie and I turned out to have some interesting points of commonality, which was a pleasant surprise, and so we talked about not just science and science-writing, but England, gardening, and the East/West divide in Los Angeles.

book prizes

(Above: Available light (sorry) shot of Alan Zarembo dipping a bit of pineapple into the chocolate fountain. Meghan Daum and Rosie Mestel look on.)

Some friends and colleagues from USC were there in an official capacity as well, such […] Click to continue reading this post

When Worlds Collide, III

Well, the cat’s out of the bag. Since Tuesday, in fact. What am I talking about? I’m going to get so beaten up in the playground for this…

casino royaleWell, I did a post a while ago about a trip I did to New York to take part in a day long shoot for a magazine, all dressed up in my tuxedo on a “Casino Royale” themed set. You can read about it in full here. What was the point? Reaching out. More science in the public domain, and on the lips of the regular person on the street. The usual things you know (from my writing here and elsewhere) that I’m passionate about. The readership of the magazine in question is not commonly exposed to images of scientists. The world of science and practicing scientists hardly intersects with the world of R&B, hip-hop, sports, fashion, the primary foci of this magazine and many others. I see no reason why not, but those who work in the media that control most of the images we see think otherwise.

Except for some creative people at King magazine. King magazine is a men’s magazine aimed primarily at young African Americans. (See a Wikipedia summary here, and the magazine website here. Warning! This is a men’s magazine aimed at a very specific demographic/readership, and while it does not warrant being on those shelves in the store that are behind the black glass, it is decorated from cover to interior in a manner that is… shall we say “somewhat differently” from the magazines I usually point to, such as SEED, National Geographic, or Scientific American! Ok?)

Every year, King magazine does a feature shoot of a group of people making interesting noises in their respective fields, people that you’ve either heard from (if you’re into those fields, and sometimes even not) or that they expect you’ll hear from soon. It’s all glossy and fun and so forth, and they decided (to my lasting surprise) to call me and ask if I’d take part. Hence the New York trip. The magazine is out on the stands now, and you can go and look at it.

I took the liberty of making some scans of the pictures for you (I hope the magazine’s staff don’t mind!), since I’d teased you so much in the last post with some of the shots I took, but could not reveal details about who was in the group, etc. There’s more in the actual magazine, such as quotes from the subjects about their work, life, etc.

So here goes:

[…] Click to continue reading this post

Small Things Considered

What small things? Elementary particles! The second of David Kestenbaum’s excellent report on CERN’s LHC aired yesterday on NPR’s All Things Considered. You can see what I said about the first part here, and the second part can be listened to on the NPR website here. There’s also more video, extra audio, and a transcript.

atlas detector
(Image: The seven story tall Atlas detector at the LHC. (photo: Serge Bellegarde))

The focus on this one broadens out to marvel at the sheer scale of the experiment as a civil engineering feat, and also as a feat of human cooperation (consider the many countries, languages, different people, etc, who are collaborating to make this happen). It’s great to hear the many voices of the various scientists he talks to.

(It’s also great, on a personal note, to hear Jim Virdee (the CMS spokesperson) […] Click to continue reading this post

NPR goes to LHC

National Public Radio’s David Kestenbaum, who’s quite reliably an excellent reporter whose field reports I always enjoy, did a report on CERN’s (soon to be switched on) Large Hadron Collider (see also a Wiki here) today! Or rather, it was played on this morning’s Morning Edition. Here’s the site where you can listen to an archived version of the report, and read a transcript of some of it. It’s rather well done.

CMS Higgs simulation event

(Image: A simulation from the CMS experiment – part of the LHC – showing the decay of the Higgs particle after being created in one of the high energy collisions.)

It starts with a few theoretical physicist clichés in the introductory remarks leaving up to talking to Alvaro De Rujula, but it’s fine – not really too over the top, and done with good humour. Really good is that fact that once the physics issues start being discussed and described, he focuses on doing that well. The bottom line is that if your subject -the science- is good, that should take center stage in forming the core of the report for attracting and holding the audience’s attention.

And report does it well. Through interview and Kestenbaum filling in with further […] Click to continue reading this post