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Recent posts
304. Science in Watchmen. How Ozymandias prevented Dr. Manhattan from seeing the future
If you have already seen “Wathchmen” (and/or have read the Moore’s graphic novel), recall that one of the main pillars of the storyline is the fact that Adrian Veidt (Ozymandias) used generators of tachyons located in his playboy hideout in Antarctica to prevent Dr. Manhattan from seeing the future and being able to affect Veidt’s [...]
303. Video of the day: Susskind’s lecture on general relativity 6
Just released… Previous lectures from the course can be found here. In this lecture (almost 2 hours!), Susskind discusses geodesics, parallel transport and curvature tensor.
302. Dynamical black holes & expanding plasmas
Pau Figueras, research associate at the Department of Mathematical Sciences in Durham University, works on black hole solutions (and their relatives) in string theory. Dmitry. The AdS/CFT correspondence has over the years played an invaluable role in providing insight into the dynamics of strongly coupled gauge theories. An important application of the correspondence has been [...]
301. Relating field theories via stochastic quantization
Domenico Orlando, a full-time member of IPMU (Japan), is known for his works on many aspects of string theory such as string theory on curved backgrounds, quantum crystals and exact solutions in string theory. Dmitry. First of all I would like to thank Dmitry for inviting me to write about Stochastic Quantization in connection with [...]
300. Event horizon of Sgr A*
Dear friends, I am really sorry for leaving you without a physics post (the video clearly cannot be counted ) – the reason was my faulty internet connection. The post that you will see below was almost ready but I wanted to make a short last check before it gets posted, and that’s when my [...]
299. Video of the day: Why gravity is weak
It seems I did not post those for quite a long time… Another promo video about string theory – enjoy
298. Do all spherical viruses have icosahedral symmetry?
This is a guest post by Eric Lewin Altshuler (UMDNJ, Newark) and Antonio Perez-Garrido (U. of Cartagena). Dmitry. More than half a century ago Crick and Watson (Nature, 177, 473-475 (1956)) had the ingenious insight that viral capsids must be made of multiple units of the same small number of proteins, lest the viral genome [...]
297. Exact gravity dual of a gapless superconductor
This is a guest post by George Koutsoumbas from the National Technical University of Athens. Dmitry. I would like to thank Dmitry for the invitation to write a blog entry on my recent work with E.Papantonopoulos and G. Siopsis entitled “Exact Gravity Dual of a Gapless Superconductor”, arXiv:0902.0733 [hep-th]. The AdS/CFT correspondence has become a [...]
296. Global aspects of the scalar meson puzzle
This is a guest post by Renata Jora from INFN. Dmitry. I would like to thank Dmitry for inviting me to write this post about our paper (A. Fariborz, R. Jora and J. Schechter) “Global aspects of the scalar meson puzzle”, arXiv:0902.2825. I will start with a few historical facts. It was first noticed that [...]
295. Weak lensing signal in Unified Dark Matter models
This is a guest post by Stefano Camera (INFN and U. of Torino) about the work he has done in collaboration with D. Bertacca, A. Diaferio, N. Bartolo and S. Matarrese. Dmitry. A particular description of DE is suggested by the Unified Dark Matter (UDM) models. While most of the models of DE rely on [...]
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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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