Sunday, December 19, 2010

New Paper on Optical Manipulation of Thermal Atoms.

Chaotic dynamics of thermal atoms in labyrinths created by optical lattices.
Rafael Pérez-Pascual, Blas Manuel Rodríguez-Lara and Rocío Jáuregui.
Accepted at the Journal of Physics B: Atomic, Molecular and Optical Physics.

We study the dynamics of non interacting thermal atoms embedded in structured optical lattices with non trivial geometry. The lattice would be generated by two counter propagating modes with parabolic cylindrical symmetry and we concentrate on the quasi conservative red detuned far-off-resonance regime. The system exhibits quasi periodic and chaotic behaviors whose probability can be controlled by varying the intensity of the beams. The spectral density of the trajectories is used as a chaos signature. An analysis of permanency times for chaotic trajectories that visit more than one potential well reveals a distribution with a long tail.

B. M. Rodríguez-Lara's publication list

Monday, December 6, 2010

Metropolis by Thea von Harbou

I was introduced to Metropolis back in my undergraduate days; it was Rintaro's Metropolis anime adaptation of the manga with the same name. A few months after this first encounter with the topic, I was lucky enough to be in a screening of Lang's Metropolis, the German silent film based on the original novel. It was with great pleasure that I found the original topic more interesting than the loose Japanese fanzine---I did like the anime.

Yesterday, I just finished reading the novel written by Thea von Harbou which was the source for the screenplay made by her and Fritz Lang, her husband at the time. I got the electronic version through feedbooks a few weeks ago. Truth be told, even after reading the novel, I can barely remember a few scenes from the silent film; but the novel is a swift good read. The writer uses repetition more than I like it but to a good effect.

Metropolis is a science fiction novel that deals with a industrialized futuristic dystopia where the gap between the rich and the poor is so large that the simile used for the labor masses is "food for the machines." The main thesis is that "the heart is the mediator between hand and brain;" promoting a non-violent mediated solution to the clash of the classes.

As expected by the main thesis, there is a good share of love, fidelity, and loyalty stories that help unfolding the main plot.

While I do not agree with the main thesis---reason and common law based on reason are there to give structure to society, not emotions---, as I said before, it is a swift read, with one of those happy endings, Gothic cathedral swashbuckling and redemption of the astray dictator included.


Other books I've read

Sunday, December 5, 2010

Last weekend movies...

It was a long week; I managed to get my hands on a couple of good movies, one of those a thriller...

  1. The Ghost Writer, ***
    I like the way Roman Polanski tells a story --in particular, thrillers. This film tells the story of an unnamed ghost writer, portrayed by Ewan McGregor, hired to finish the autobiography of a former British Prime Minister. The plot is simple and you can figure it out by the middle of the film, the twist are somewhat expected. The ending, the ending is great!

  2. World's Greatest Dad, ***
    By the title, and Robin Williams playing the lead role, I thought this would be a comedy. On second thought, it might be possible to classify it as a satire, a very noir satire. The film was written and directed by "Bobcat" Goldwaith, yes that "Bobcat." The film deals with fame dreams, lonelyness and family in sort of modern and distorted fable. I really liked the fable feeling of it, simple, straight-forward, moral included.

  3. Year One, *
    Revisit the first couple of thousand years of known written history in a few days. Less than two hours in real time. This is one of those movies where you don't have to think but I really don't like. Allegedly a comedy, I feel it like one of those movies that try to make a point, in this case that reason is the fundamental truth and source of self-knowledge, thus source of inner peace and happiness, make it but fail to make you laugh or keep entertained.
I also managed to see the latest, at the time, episode of Big Bang Theory, fourth season's episode nine, where Raj and Howard manage to get themselves in an awkward situation while Penny's dad begs Leonard not to give up on her daughter. Glee's second season's episode seven was a stunner featuring Gwyneth Paltrow, who happens to be an amazing singer and dancer. Finally, on the second episode of The Walking Dead our Sheriff manages to escape impending death and is closer to find his kid, ex-wife and ex-best-friend-who-is-doing-his-wife.

Saturday, November 27, 2010

Is Mexico a failed state?

This week, I was shocked by the story of Dn. Alejo Garza (RIP), a 77 year old man that died defending his ranch from a drug gang that decided to take over his property in Tamaulipas, my home-state.

When I first read the story, I was surprised it didn't happened in Monterrey during one of the drug-gang-blockades that are becoming part of the daily life in the "Sultan of the North." Somehow, I had the impending doom feeling that people in Monterrey would start carrying guns to protect themselves from the gangs stealing cars and trucks to block the city streets, in order to prevent the transit, in and out of town, of the military and federal police during anti-drug operatives.

I have to say that the smallest part of the shock came from the fact that Dn. Alejo (†) managed to kill four gang members and wounded another two; what really freaked me out were the implications of such actions---as the monopoly of violence is, in the early theories of the role and responsibilities of the state, mainly those proposed by Max Weber, the defining characteristic differentiating a sovereign state from a failed one, and Mexico does not sanction a self-defense stance by an armed population---; that is, added to the illegal acts of violence and terrorism committed by the drug lords and associated gangs, now there is an illegal act of violence committed by a civil in self-defense, which has been praised by some sectors of the civil population as an exemplar attitude and stance.

In our modern times, one could argue that the monopoly of violence is not the only important factor to define a sovereign state. There is the economics factor, the provision of services and law, etc. While there's a relative economical stability in Mexico, it is clear that the state has lost the monopoly of violence, alas, thousands of deaths related to the drug war of the last three years testify in favor of this thesis; even sadder, the drug war, allegedly started as an answer to the corruption and infiltration of the government by the organized crime, and the possibility of a civil population taking matters on their own hands instead of denouncing the crimes to the authorities, testifies to a generalized perception of a corrupt law enforcement and judicial system that does not protect nor serves the common citizen. With this in mind is not a surprise to find Mexico in the warning list of the Failed State Index by the Fund for Peace.

Mexico is not yet a failed state but it will take the efforts of the whole country to steer the future out of harms way. Education and transparency by the government, as well as an exemplar citizenship that denounces and follows the law, are key factors for a safe tomorrow that might or might not depend on legalizing drugs. If corruption and privileges without accountability and responsibilities are the goal in the mind of our everyday José, then, sadly but true, we are fucked up as Mexicans.

ERRATA: My good and old friend Salvador pointed out to me that, while it might be hard to argue self-defense in Mexican Courts, the Mexican Constitution sanctions the right to have non-restricted registered weapons at home and, in some special cases, to carry a weapon for self-defense in its Article 10.

Saturday, November 20, 2010

Last weekend movies...

These last days I had an even stronger urge for no-brains-needed movies. Such was my luck that I found one that I really liked...

  1. Scott Pilgrim vs. The World, *****
    It has been a long time since I enjoyed a films so much. It is not about the crappy dialogues. It is not about making jokes about the Canadians. It is all about the visual storytelling! There are always so many things happening on screen, the pace is fast and furious, it is a fantastic surrealistic trip!

  2. 2012, **
    I was looking for no-brain-needed movies and I got what I asked for... This apocalyptic story lack a good everything, storytelling, photography, acting, included. And the kid name is Noah. I rest my case. I was used to think of John Cusack as an actor involved in interesting films, but lately this is not the case.

  3. Night at the Museum: Battle of the Smithsonian, *
    The weekend before the one had great no-brain-needed movies, this one just did not figure out. I really had the hope that this sequel will be better than the original, but it is not. But, I will not lie, Octavius had the best line in the movie:"I ride on the back of nature's most fearsome creature! I ride... the squirrel!"

  4. Street Fighter: The Legend of Chun Li, *
    Come on! At least they could have tried to made an effort with Vega's mask.
Finally I managed to get back on track with the tv series I'm following this season, Big Bang Theory is now showing fourth season's episode eight and Glee is showing second season's episode six, both of them are good. While Glee is getting better, but nothing better than the Rocky's Horror Picture Show episode, Big Bang Theory is somehow losing its edge. I added The Walking Dead to my series roster and it is great! Good old fashioned horror; a must see!