Monthly Archives: November 2007

Can the Underlying Structure of the Universe Be Represented as an E8?

Lisi-figure2.gifIt's either all wrong, or it is one of the most important theoretical physics discoveries in history, a major step in the direction of a unified field theory.

In An Exceptionally Simple Theory of Everything, one Garrett Lisi, physics Ph.D and, yes, nearly-homeless surfer dude, suggests that E8 (described by the UK Daily Telegraph as an “eight-dimensional mathematical pattern with 248 points first found in 1887, but only fully understood by mathematicians this year after workings, that, if written out in tiny print, would cover an area the size of Manhattan”) has this amazing property: E8, says, Dr. Lisi, contains the Standard Model, plus the symmetries belonging to gravity.

And, oh yes, the model makes the testable hypothesis that there are 20 more standard particles waiting to be found by supercolliders. (Twenty seems like rather a lot?)

Here's the abstract of the paper,

Abstract: All fields of the standard model and gravity are unified as an E8 principal bundle connection. A non-compact real form of the E8 Lie algebra has G2 and F4 subalgebras which break down to strong su(3), electroweak su(2) x u(1), gravitational so(3,1), the frame-Higgs, and three generations of fermions related by triality. The interactions and dynamics of these 1-form and Grassmann valued parts of an E8 superconnection are described by the curvature and action over a four dimensional base manifold.

This representation, to the very limited extent I follow it, doesn't tell us anything directly about the shape of the universe; rather it threatens to tell us something fundamental about the relationships between the particles and forces that make up and that shape the universe. While the “exceptionally simple” part of the paper title is — or had better be — a joke, the 248 dimensions of E8 are needed only for representation of relationships; the universe it describes has only the three dimensions we know, plus time, distinguishing this theory from string theory, which requires many more (even if some are very tiny).

Dr. Lisi's theory also makes pretty pictures.

Pictured above: figure 2 of Dr. Lisi's paper, “The E8 root system, with each root assigned to an elementary particle field.” There's also a cute movie of an E8 being rotated.

As noted above, there are already critics. Super-string advocate (and politically weird) Luboš Motl will have none of it.

Continue reading

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A Tiny Publication

A long time ago — 18 months? — Professor Paul Caron organized a seminar at Harvard entitled Bloggership: How Blogs are Transforming Legal Scholarship. The papers from that event have finally reached dead trees via the Washington University Law Review.

The Taxprof Blog has a links to all the e-versions of the articles, including my own brief and somewhat skeptical contribution, The Plural of Anecdote Is “Blog”, 84 Wash. U. L. Rev. 1149 (2006).

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Giuliani’s Campaign Theme

TPMtv: I'm Rudy Giuliani and I Approve This Message:

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NSA Pushing Randomization Standard that has a ‘Back Door’

Schneier on Security brings us The Strange Story of Dual_EC_DRBG. it seems that one of the new randomization standards being pushed by NIST originated in the NSA and is capable of being engineered to produce numbers that look random but are not.

Since random numbers are frequently used to seed cryptographic algorithms, this is a fairly big deal to the crypto community. The NSA isn't talking, but I'm guessing this was no accident.

Posted in Cryptography | 2 Comments

Behold the Blogging Magistrate

I know we have at least one blogging ex-judge in the US. There's the judge who collects legal humor. And, of course, there's Judge Posner, something of a law unto himself, who give his views online (mostly with his law & economics professor hat on), but do we have any serving judges with a full-time blog who discuss matters at all close to their service on the bench?

England (allegedly) does. See the (pseudonymous) The Magistrate's Blog. [In fact, I've just realized as I was editing this post, there's more than one, as the View From The Bench plausibly claims to “Being the thoughts, rants, speculations and anecdotes of a magistrate on a northern bench.”]

An English magistrate is a judge of limited jurisdiction, mostly petty offenses punishable by up to six months in gaol. Interestingly, many magistrates are not trained lawyers, although they do have legal advisers. (See the Wikipedia entry for more comprehensive, and perhaps even accurate, information.)

Whoever “Bystander” is, real magistrate or not, The Magistrate's Blog is an erudite and interesting blog. Yet there are some obvious ethical issues raised by a judge commenting on things that touch on past cases; these concerns are perhaps lessened by the magistrate's historical role as something of a representative of community values, or (traditionally) at least of the values of the better and rather more upper-crust elements of the community.

The magistrate, if that s/he be, deals with these with this self-description and disclaimer:

Musings and Snippets from an English Magistrate This blog is anonymous, and Bystander's views are his and his alone. Where his views differ from the letter of the law, he will enforce the letter of the law because that is what he has sworn to do. If you think that you can identify a particular case from one of the posts you are wrong. Enough facts are changed to preserve the truth of the tale but to disguise its exact source.

And perhaps that is enough.

Even so, I don't think that a sitting US judge would dare do anything like this. We've seen a prosecutor get in trouble for blogging. And of course there was the defendant who blogged about his own case pseudonymously — and lost the case when opposing counsel figured out who he was.

There are also a host of juror-bloggers. There's nothing wrong with a (petit) juror blogging after the trial is over, but it's obviously a ground for major concern if it happens during the trial as it provides a conduit for juror to lawyer/party communications which (a) might give one side an unfair advantage if only one side is learning what arguments are working ; (b) facilitate jury tampering; (c) provides fertile grounds for appeals. (More on blogging jurors here and here and no doubt elsewhere.)

Don't get me wrong, as a reader, I'm a fan. And I'm prepared to agree that the world is better off with the Magistrate's Blog than without it — so long as it's being true to its promise to change enough facts “to preserve the truth of the tale but to disguise its exact source”. But that is very difficult to do consistently over a long period of time. How, I wonder, was it done in this post, for example? (In the comments, Bystander even states that counsel read a particular case to the court!) If indeed the blog is by an actual Magistrate, the danger of slipping, or even of discovery over time without any slipping, is all too real.

Would discovery be that bad? In principle there's no difference between a judge writing an academic article about law reform and a magistrate blogging about legal issues that come up in and around the court s/he serves on. Were I a judge, however, I don't think I'd blog, and I certainly wouldn't do it pseudonymously if only because people would be sure to see that — however unfairly — as a sign of a guilty conscience. More importantly, print usually has editors and always takes time, which gives one opportunities for reflection. Blogging is quick and usually unedited. Risky….

But meanwhile, I'm going to be reading what “Bystander” writes.

Posted in Blogs, Law: Ethics, UK | Comments Off on Behold the Blogging Magistrate

Why the Writers Are On Strike

Here's a simple explanation of why Hollwood's writers are on strike.

It's effective. Who is going to write the studios' reply?

Posted in Econ & Money | Comments Off on Why the Writers Are On Strike