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Dmitry Podolsky

324. Video of the day: nice visualizations of elementary particles

Happy early Saturday, science geeks! Here is a little gift for you which will hopefully help you to sleep better (that’s what I am going to do now ) – nice visualizations of elementary particles It is not like they have anything to do with reality, but I liked the idea very much. The set [...]

HEP-TH/PH March 28, 2009 5 Comments
Zlatko Papic

323. Fractional quantum Hall effect in some multicomponent systems

Zlatko Papic is a PhD student at LPS, Universite Paris-Sud, France (his advisors are Mark Goerbig and Nicolas Regnault) and SCL, Institute of Physics, Serbia (where his thesis advisor is Milica Milovanovic). His main interests include quantum Hall systems. Dmitry. In recent papers, we have investigated the origins of fractional quantum Hall states that occur [...]

COND-MAT March 27, 2009 2 Comments
Dmitry Podolsky

322. Video of the day: “Boston Dynamics”

I think it is worth posting about… I’ve noticed the BigDog project (by Boston Dynamics) about a year ago. It seems that their robot is now good enough for U.S. military to use it in Afghanistan. The first video in the playlist is BigDog’ test in March 2008 (very impressive), the second shows that sometimes [...]

Uncategorized March 26, 2009 3 Comments
Miguel Paulos

321. Holographic hydrodynamics

Miguel Paulos is a PhD student at DAMTP, U. of Cambridge working on non-equilibrium AdS/CFT. Dmitry. In this post I will describe recent work done by myself, Robert Myers, and Aninda Sinha to understand strongly coupled plasmas with a finite chemical potential. For more details and full references see 0903.2834. Let us start with some [...]

APPLIED, HEP-TH/PH March 25, 2009 1 Comment
Dmitry Podolsky

320. Video of the day: STS-119

Here I’ve collected some videos by NASA related to the recent somewhat problematic Space Shuttle mission STS-119. The mission’s goal is to the fourth set of solar arrays and batteries to the station, you will find complete walkthrough of the mission below.

HEP-TH/PH March 25, 2009 0 Comments
Dmitry Podolsky

319. Turbulence. Dynamical approach

When we study a turbulent flow, whether turbulence is realized in fluid, plasma, etc., one of the most interesting and complicated questions is the one about transition to turbulence: how exactly the smooth motion of the field becomes turbulent, chaotic, independent of external noise? It seems to be impossible to answer to this question using [...]

APPLIED, ASTRO March 24, 2009 1 Comment
Fabien Buisseret

318. Glueballs and gluelumps as bound states of transverse constituent gluons

Fabien Buisseret is a postdoc at the Nuclear Physics department of the University of Mons-Hainaut. His interests include various approaches to QCD. Dmitry. 1. Generalities Among other exotic hadrons like hybrid mesons and tetraquarks, QCD allows the existence of purely gluonic bound states, called glueballs, whose structure and properties deserve a lot of interest theoretically. [...]

HEP-TH/PH March 23, 2009 2 Comments
Dmitry Podolsky

317. Global crisis: one interesting plot

As it seems, I did not write about global crisis for quite a long time It is not like I see any meaning to get deeper into finding ultimate reason why the crisis had to take off (I guess the only meaningful question one might ask in the present situation – “what am I, personally, [...]

Uncategorized March 22, 2009 14 Comments
Dmitry Podolsky

316. Richard Hamming’s “You and your research”

Gabriel Robins, professor of computer science at the U. of Virginia, has kindly allowed me to repost this amazing transcript at NEQNET… I hope you’ll enjoy it as much as I did. Dmitry. Richard Hamming “You and Your Research” Transcription of the Bell Communications Research Colloquium Seminar 7 March 1986 J. F. Kaiser Bell Communications [...]

Uncategorized March 21, 2009 1 Comment
Dmitry Podolsky

315. Turbulence: order and disorder in turbulent flow

Let us continue our short excursion into physics of developed turbulence (I hope that you don’t mind, if you do – please let me know ) Last time we have discussed technicalities related to averaging and statistics of the turbulent flow, today I would like to get back to foundations and discuss a bit various [...]

APPLIED March 20, 2009 3 Comments
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  • James Ph. Kotsybar: SAGITTARIUS A* -- James Ph. Kotsybar Mysteriously cloaked, obscure despite Interior illuminating glare, Long ...
  • cad: The presentation can be found in several formats at http://pirsa.org/08110051/...
  • James Ph. Kotsybar: COMMENTS FOR THIS ENTRY ARE CLOSED -- James Ph. Kotsybar When the general public hears about A breakthrough in...
  • James Ph. Kotsybar: FEARFUL SYMMETRY (from Songs Of Experiments) -- James Ph. Kotsybar Beyond notice, out of sight in dimensions c...
  • James Ph. Kotsybar: OFF THE SCALE -- James Ph. Kotsybar The young lady known simply as Bright, who could travel at speeds f...
  • James Ph. Kotsybar: COSMIC PREDICTION -- James Ph. Kotsybar Betelgeuse is gonna blow! It?s just a matter of time It?s only ten...
  • Leo: Ok I have a question: if a black hole is supermassive, say 100 billion solar mass, let's suppose Alice fells int...
  • James Ph. Kotsybar: HIGHER DIMENSIONS -- James Ph. Kotsybar From point to line to plane to sphere there?s only three dimensi...
  • superkuh: I am glad you are back! No more disapointing weekly refreshings of that monkey....
  • Dmitry: Thank you James, beautiful and inspiring as usual :)...
  • Dmitry: Yes, renormalization group should still be applicable, but crit. exponents have to be different. By the way, if we ...
  • James Ph. Kotsybar: UNIQUE PARAMETERS -- James Ph. Kotsybar There is only one answer to creation. Though we don?t nearly understan...
  • Ariel Amir: Very interesting, thanks. It indeed seems to be very close to what we discuss here. I wonder whether the distributi...
  • Dmitry: Hi Ariel, thanks for the explanation! Let me now discuss a bit the application I had in mind. It has to do w...
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