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Recent posts
Self-improving artificial intelligence: video of the day
A lecture (colloquium, more precisely) by Steven Omohudro given at Stanford. If you don’t know about the lecturer, the guy has had quite an impressive career: he started as theoretical physicist, but switched eventually to AI and neural networks (among may other achievements on this field, he held an assistant professorship at U. of Illinois [...]
More on IR divergences and decoherence in inflationary universe
I happened recently to dig through a couple of interesting papers by Yuko Urakawa and Takahiro Tanaka about IR divergences that cosmological perturbation theory in quasi-dS space features, namely “No influence on observation from IR divergence during inflation — Single field inflation –” and “Influence on observation from IR divergence during inflation — Multi field [...]
Recent LHC news: video of the day
The CERN podcast from Apr 16 2009. They are finally able to assemble to last magnet among those that were broken during the famous incident in the last September The video features the magnet itself (ever wanted to see one?)
Practical quantum cryptography
As it seems, people from Cambridge were able to overcome difficulties that make quantum cryptography impractical: they have built a network with quantum cryptography-based security that allows 10 Mbit/s broadband speed (although the distances between nodes cannot exceed 10 km) – previous speed record was something like 10kbit/s or so. Open key cryptography In order [...]
Dynamical maps
… in continuation to the Sunday’s post about dynamical visualization – sorry, cannot wait before the next Sunday to post offtopic Just discovered another beautiful tool for a curious mind via Sergey Schegloff – press “Play” and enjoy the movie about the history of religions: As it seems, Islam was always a very serious player [...]
Witten interviewed by Ira Flatow on Big Ideas: video of the day
.. and a very clear introduction into string and M-theory for dummies
Fermi telescope does not confirm DM claims
Fermi Space Telescope (image by NASA) Fermi gamma-ray space telescope was unable to predict the presence of the 300-800 GeV peak in the distribution function of high energy electrons in cosmic rays. Let me remind you that the anomaly we are talking about was claimed to be found by the ATIC team and generated recently [...]
387. Gapminder and dynamical visualization
Nowadays, in statistical analysis of various economic or social factors we mostly use plots where time is just another coordinate along another axis. In real life we do feel time and dynamics of various processes in a different fashion – time is more like a sequence/collection of snapshots taken at its different moments, in the [...]
386. Saturday’s photoguess
The questions related to this photoguess: a) what is the physical phenomenon on the photo? b) who made it? (where it was made?) Seek and thou shalt find! Update: kudos to hukrepus , according to him/her this is larger than average (>5m) lumps of material in Saturn’s rings with the Sun shining almost edge on [...]
385. NEQNET: Last two weeks of April
The last month of the spring 2009 has started. Like all crazies, who usually get a bit more active during spring, I want (need) to become more active – my spirit requires some change. In this respect, I would like to ask you – what do you want to see new on NEQNET? New design? [...]
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Large non-Gaussianity from axion inflation
January 31, 2012 14:01 -
On strong disorder renormalization
March 18, 2011 20:03 -
Relaunching NEQNET
January 20, 2011 21:01 -
Saturday’s photoguess: what does this monkey symbolize?
June 20, 2009 19:06 -
Dynamics of space storm
June 19, 2009 12:06
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Micro: Can 2 question provide a common solution? Black holes, information loss paradox and Ultra high energy cosmic rays. ...
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James Ph. Kotsybar: SAGITTARIUS A* -- James Ph. Kotsybar Mysteriously cloaked, obscure despite Interior illuminating glare, Long ...
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cad: The presentation can be found in several formats at http://pirsa.org/08110051/...
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Leo: Ok I have a question: if a black hole is supermassive, say 100 billion solar mass, let's suppose Alice fells int...
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superkuh: I am glad you are back! No more disapointing weekly refreshings of that monkey....
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Ariel Amir: Very interesting, thanks. It indeed seems to be very close to what we discuss here. I wonder whether the distributi...
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