Category Archives: personal

Reconfiguring

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usc campusWell, it is the first day of the new semester here at USC, and of the new academic year. Whether I like it or not, everything changes today, in terms of my work patterns. I have to squeeze the sprawl of my research (recent posts about that here, here, here, and here) back into a more confined space to make room for other things. Chief among those is my Physics 151 class, where I teach about 90 freshmen (science and engineering majors) the ins and outs (but mostly the ins) of mechanics and thermodynamics. I’ll also be dealing with a number of service and outreach projects that I’ve had on hold for a few months, and, of course, I’ll be serving on a number of committees doing various things in the department and the university at large.

Am I ready? Not entirely. I’m not fully in the right frame of mind, it has to be said. The various research projects I was working on did not get as far as I would have liked, and I could benefit from more of the full-immersion mode that Summer affords in order to follow up lots of ideas and computations. Also, there are entire projects I did not even get to.

But you do what you can, and that’s all there is. I’ve been dumped into a weird time […] Click to continue reading this post →

The Urban Homestead

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many hands at the speakeasy

Oh, boy this was fun. Christine Louise Berry organizes a series she calls The Speakeasy, and I’ll tell you below about the really great one that took place on Sunday. You’ll remember my mentioning Christine’s work earlier. She (the main force behind SmartGals) did that marvellous McArthur Park event with the fragments of plays to be found all over the park, and had the excellent taste to combine it with Mama’s Hot Tamales. A couple of months ago, at a party of hers (to celebrate car-independence in LA!), I met Erik Knutzen, with whom I ended up talking a great deal about lots of things because we seem to be on the same page on many things with regards biking and public transport (he’s part of the Los Angeles County Bicycle Coalition), gardening and sustainability (he’s involved in a lot of land use issues for his day job). So we talked about lots of topics, from composting to the Velib system (and why Los Angeles has essentially already decided not to take that wonderful route, sadly).

Erik, with his partner Kelly Coyne, write a really great blog called Homegrown Evolution (excellent title), which is all about urban gardening, and they are passionate about getting more people to do gardening (as am I, you might have gathered). You’ve probably read my posts on gardening from time to time and thought that it isn’t for you since you’re in a big city in an apartment on the nth floor (where n is some integer greater than one or zero) with no access to garden space. I’ve […] Click to continue reading this post →

Not a Free Lunch

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Yesterday saw a mass desertion for a while here at the Aspen Center for Physics. Howie Haber (UCSC) organized a large group (twenty-two) of participants (and some of their guests) of the program entitled “LHC: Beyond the Standard Model Signals in a QCD Environment” (info here), to go for a group lunch at the excellent Pine Creek Cookhouse, 12 miles away up Castle Creek Road. And, I should mention, 1700 or so feet up. The latter is significant since about two thirds of us, led by Howie, cycled up there! It takes a while (times ranged from 1 hr 20 minutes to about 30 – 40 minutes more than that), and there are about two or three major long, punishing hills to deal with, but it was worth it!

Here are some (not all) of the cyclists at the destination (restaurant is a low-slung cabin-style affair out of shot to the right). Howie, our organizer, is in the middle at the front. (Click for larger view):

Lunchtime ride up to Pine Creek Cookhouse from Aspen Center for Physics

(Er, for the record, I’m slightly embarrassed by wearing socks with my sport sandals – a personal no-no – but I wanted to protect my feet from 12 miles of pedalling friction, so made an exception.)
Here are some random shots of happy arrivals (click each for larger): […] Click to continue reading this post →

Draw

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game of naughts and crosses, spotted in the bar/lobby of an Aspen hotel.I’ve been quiet here recently, I know. Was mostly working, thinking and reading on the weekend. Did not even go on a huge hike (although I did do a nice walk or two). Sometimes, on an evening, I go and read a novel in a bar. (I’m weird that way, I know.) I’ve not been going to the noisy bars full of yelling and the party crowd, but instead like to find a nice sofa in one of the bar/lobby areas of the nicer hotels. Great for reading, and the drink prices are merely extortionate, as opposed to just plain offensive in the more popular places. (Photo: a naughts and crosses game I spotted on a table in one such lobby.)

Well, it’s a draw so far in the battle with my equations and ideas, but I think I’m developing a stronger position. (From this you can deduce that I decided to stick with the same project and hold my ground and struggle on some more.) Perhaps the next […] Click to continue reading this post →

Humps

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Now playing: I’m Confessin’ (That I love You), Thelonious Monk [Solo Monk]

Well, I’m now beyond the halfway mark of my retreat and I’ve been on the one project all this time. I’ve made progress here and there, had some setbacks, and have got very stuck at times. It’s just one of those things with this sort of work. Par for the course.

humps in road warning sign, UKThere are times when you think that if you do just a bit more on the project, it’ll get over the hump, as it were, and then coast along. So far I worry that there may be simply an infinite set of equally spaced humps of similar height all the way down the road**, in that every now and again I discover a rather pretty little gem of a result that’s quite encouraging, but these gems don’t seem to have anything to do with each other. So it’s a little scattered gravel pit of gems as opposed to a lovely… Ok, cvj, enough with the gem metaphor.

Now playing: Totem Pole (Alt. take), Lee Morgan [The Sidewinder]

The issue here is whether I should jump ship and use the last of my quality time here […] Click to continue reading this post →

Two!

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Asymptotia's Second Anniversary!Well, you know I almost missed it: Asymptotia, this little blog that you come to read from time to time, is two years old today! It has been a pleasure and an honour being part of this community we’ve formed, made up of you the reader and maybe sometime commenter, and me tossing up a few things to look at, consider, laugh at, and/or discuss from time to time. I really enjoy the kind of connections that are made, and seeing people brought together (both on- and off- line) using Asymptotia as a focal point. Have a look at what I said on this date last year, and in the inaugural post.

For those of you who are not regulars, assuming you’ve already read the about page, let me mention that I think of this blog as a bit like a gathering (a party, if you will) in a comfortable home, with people in several rooms carrying out (or just listening to) conversations of various sorts. Some rooms just have things to look at. Some people […] Click to continue reading this post →

On “Do-Overs”

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I love “do-overs”. Not because I want to change anything in particular about my life, but because they are so rare, and so interesting. On my way to Vancouver on Monday, I got to do one.

We (myself and the other passengers) boarded our flight at Denver. I usually get on the plane early, and so have the change to watch people go through their routines of boarding and all that entails. After that was all, the plane full of passengers waited for the plane to get ready, doors to close, and so forth. It did not happen. After a while, the pilot came on and explained that they were trying to fix the radio, and it would be another half an hour. So we waited. After another long while, the pilot came on and said that they did not expect that the radio would get fixed in a timely manner after all, and so they were going to try something else. We would “de-plane” (a word I hate by the way – what is wrong with the perfectly good word “disembark”?) and all make our way to another gate where eventually another plane would arrive, and we’d take that one. It would be exactly the same type of plane. We would keep our ticket stubs and just re-board an hour and a half later.

I wandered for a bit, found something not too repulsive to nibble on (seems to get harder and harder in some airports), was disappointed by the meagre bookstore once again, and otherwise killed some time. Then the boarding started again. A “do-over”. Everybody would be going back to the same seats, it would be exactly the […] Click to continue reading this post →

Sharing the Storm

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Here’s something I found rather unexpected. It all begins a little more than a year ago in Los Angeles. I was chatting with a friend, Aimee Bender, about our respective modes of work, and about how Summer fits into that in general. As you may know, Aimee’s a fiction writer, (and you may have picked up somewhere that I’m a theoretical physicist), and there are a lot of parallels to be found between professions that both involve lots of sitting around, crafting with symbols, folding fragments of inspiration together into larger nuggets, and so forth. So we chat about that from time to time.

A lot of how that works can be tied to the environment in which you do it, and so we got to talking about the long dry Summer in Los Angeles, with a particularly hot spell we were going through at the time we were talking. It affects how you work, what part of the day is most productive for you, and so forth. We agreed that a rather nice thunderstorm would be a good thing to have come along, even though that was highly improbable. Just the sound of a thunderstorm is a wonderful thing, and then there’s the relief it brings from the conditions before, and the smells in the air during and after. We carried on with the hot LA work cycle, stormless.

I left a week or two later for Aspen.

Shortly thereafter, Aspen went into a typical daily cycle of sunny for most of the day with a rainy downpour in the afternoon. Very refreshing. One of those days, that downpour turned into a long super-violent thunderstorm that lasted well into the […] Click to continue reading this post →

A Hop Over To Canada

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Well, as I said in the previous post, I’m leaving my hideaway/retreat mode and popping over to Vancouver for a short spell to help out at a Summer School. It’s the PIMS (Pacific Institute for Mathematical Sciences) Summer School on Particles, Fields, and Strings. I’m giving four lectures on some of the techniques in string theory that it helps to know in order to do some of the fun things we do to get at interesting physics (such as the topic of the post before). My title is something like “Perturbative and non-perturbative string theory”, and I’ve no clue what the level of the students really is, so goodness knows how far I will get in four one hour lectures. But it does not hurt to try. I’ll be laying the groundwork for several of the lecturers who will be talking about the more advanced stuff closer to their research work, and so I hope to at least help the students gain confidence with ideas and language that will show up all over the place in the two weeks following my presentations.

So what will I cover? Well, I’m going to tailor things to the responses of the students as […] Click to continue reading this post →

Recovery Time

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Today’s going to be a slow day, with a bit of pottering about town (groceries, new novel), sitting at home (laundry, reading, writing), and working on some physics things here and there. It’ll be good to slow down. I went on another long hike yesterday, back in my more usual solitary mode. Last week’s to Willow (see a couple of earlier posts) was with my friend and colleague Albion Lawrence who I’d not seen for a long time, and so we spent a very pleasant time catching up on things (mostly sharing about books and film, as we do) as we walked.

on_west_maroon_trailYesterday’s hike, following (initially) the West Maroon trail, was taken up with conversations with myself, both internal and external, and that’s something I enjoy a great deal. I thought I’d spend a lot of time thinking over various issues in physics that I’ve been puzzling over in my work, or that I’d learned about from various conversations and seminars while here at the Center. But I did not, surprisingly. Or not much. It was a very physics-free day, even though I was out there struggling along in the West Maroon area for over five hours (out and back to the bus).

Part of this might be because due to the large amount of snow on the ground in places, I lost the trail, and so spent a lot of time following the river trying to pick it up […] Click to continue reading this post →

On Good Ideas

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A commenter, slim potato, implicitly asked a really good question earlier. It was a comment on a post I did yesterday about my struggles with a computation I was working in a notebook working on. I gave an answer, but since I know that a lot of readers don’t read the comments, and because one of the missions of this blog is to give a window on what scientists such as myself do and (importantly) how we do it, I thought I’d elevate the comment and my response into a post. Feel free to add your own thoughts to it in the comments, either as a non-scientist, a scientist, a specialist from another field, or other.

slim wrote:

I would have assumed that most of your time when working on a paper was involved on catching good ideas, not getting muddled with conventions and calculations.

cvj wrote:

Hi,

Thanks. That’s a common misunderstanding of what we do. What makes a field of physical science like physics work is computations – all of that business with calculations (including checking that your computations conventions are internally consistent) is vital to the field.

Frankly, “Good Ideas” are a dime a dozen. Anyone in my field ought to be able to think of at least six of them before breakfast. What makes a good idea go […] Click to continue reading this post →

Once More Unto The Breach…

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Ugh. A night of computing (while making and eating dinner and recuperating from a strange day-long headache – dehydration? side effects from the big hike the day before?) and muttering to myself at various points left me in a state of confusion last night. I went to bed tired and confused after getting into a muddle and realizing that I’d been probably mixing conventions in parts of my computations over the last few days, leaving me with a flipping minus sign in a result. No, I really mean “flipping”, since sometimes a 1/16 was -1/16, and sometimes that represents a physical truth and other times it represents a computational mistake – and I got confused as to which was which. Ugh.

All of this was coupled with occasionally wandering outside into the late night air filled with hungry insects in order to seek the fragment of wireless signal (I accidentally discovered it nearby on the weekend) in order to download the odd reference to check an idea or a fact. I’d have a few minutes before the bugs would find me and start to chew (I suffer from being particularly tasty to insect life – always the first person to be multiply bitten at any outdoor evening gathering), at which point I’d have snagged the download of the paper and can then run back in to the safety of indoors, flapping my arms around my head like a madman. It is an amusing dance, since I can find the […] Click to continue reading this post →

Altered Saturday Plans

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river in aspenWell, I was supposed to go for an early morning hike to start off the day, but it has not happened. It was just meant to be a short one, since I’m staying in a little cabin out of town not too far from the start of a lovely trail. Then I was to go to the farmer’s market (more on that later) and then after lunch go to pick up my ticket for the chamber music concert I’m to go to this afternoon. (I say “pick up” and not “buy” since I was the lucky winner (well, one of them) of a little ticket lottery at the Aspen Center for Physics for tickets to concerts in the neighbouring Aspen Music Festival. Hurrah!)

Well, the hike did not happen. Why? Well, at about 6:30pm yesterday while scribbling fragments of equations and furrowing my brow while sitting in a cafe in town (a change of venue after a day at the Center(re) sitting in the office, you see), I began to realize that a computation I was stuck on might actually be becoming unstuck! Various parts […] Click to continue reading this post →