I’m a 27-years-old physicist who recently concluded the doctorate in physics in noncommutative space-time theories, dualities and symplectic formalisms for constrained systems at Universidade Federal do Rio de Janeiro (UFRJ), Brazil. Soon I’ll start my post-doc.

In this blog you find opinions, news and links regarding some interests of mine, which include physics, math, music, some philosophy etc (look what the above huge letters say).

Updates. This blog is being updated a couple of times per month. To follow this blog (and many others) I recommend the use of a news aggregator. I use Feedreader.

Why “quantum algebra”? Short answer: a space whose geometry is given by a quantum algebra is “fuzzy”, so in some sense it doesn’t have points. Some more details: In quantum mechanics, this is the case of the phase space, physical states are not described by phase space points, they’re given by small planes of area proportional to the Planck constant (consistently with the Heisenberg uncertainty relations). D-branes in the point-splitting regularization and electric particles in the Lowest Landau Level are well known examples of physical systems in which the physical space behaves like a quantum phase space, that is, the physical space becomes noncommutative. In some cases this noncommutativity can be (or should be) extended to the time as well, so one speaks of space-time noncommutativity.

What’s “avant-garde music” (a.k.a. “new-music”)? This is a very broad and vague classification which can be associated with any musical genre or mixture of genres (usually it only applies to music from 20th or 21st centuries). I’ll just cite some renown “avant-garde” composers/musicians in the broad sense: P. Boulez, A. Braxton, O. Coleman, J. Coltrane (late), M. Davis, H. Pascoal, K. Stockhausen, I. Stravinsky, E. Varèse, F. Zappa, J. Zorn etc. Here at Pointless most comments regarding music are related to its avant-garde side, reflecting my preferences, but I also listen to traditional/standard music.

Language issues. My first language is Portuguese, some odd English mistakes are expected. Feel free to comment a post in Portuguese or English, regardless the language it was written.

Contact. davi#c#rodrigues&gmail#com (replace each # by a dot and & by @).

Prepared piano An illustration from B. Greene's The Elegant Universe on the space-time at the Planck scale. Comp.7640. A nice painting by W. Kandinsky. The Large Hadron Collider (LHC). It'll start to work in 2007.

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