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Recent posts

Dmitry Podolsky

Workshop on tests of gravity at Case Western – day 1

Dear friends, I am sorry for being rather quiet for a while. As many of you may already know, my laptop has decided to enter coma during the trip, as a result, I was left without appropriate internet access (sporadic use of Pascal Vaudrevange’s computer is not counted, thanks, Pascal!). Although the laptop tried to [...]

ASTRO, COND-MAT, HEP-TH/PH May 27, 2009 10 Comments
Michael Mortonson

Things that go bump in the CMB polarization

This post is written by Michael Mortonson, graduate student of Wayne Hu at the U. of Chicago. Michael has also asked me to thank Cora Dvorkin and Wayne Hu (U. of Chicago), and Hiranya Peiris (U. of Cambridge), who contributed to the post. Dmitry. One of the most impressive results from experiments that have measured [...]

ASTRO May 26, 2009 0 Comments
Balt van Rees

Real-time gauge/gravity duality

Balt van Rees from the U. of Amsterdam continues the discussion of non-equilibrium AdS/CFT we have started not so long time ago. Since his recent paper with Skenderis was one of the major achievements in the field, I highly recommend going through his post. Dmitry. Our recent paper Real-time gauge/gravity duality offers a prescription for [...]

HEP-TH/PH May 25, 2009 0 Comments
Andrew Zayakin

Correlator of Wilson and t’Hooft loops at strong coupling in N=4 SYM theory

Andrew Zayakin works at LMU, Munich and ITEP, Moscow. His interests include non-perturbative physics of QCD, string theory and AdS/CFT correspondence. Dmitry. This post is about my recent paper with Alexander Gorsky and Alexander Monin about a correlator of a Wilson and a ‘t Hooft loop. Before I proceed, I should explain what these objects [...]

HEP-TH/PH May 22, 2009 0 Comments
Gianluca Calcagni

String theory and the diffusion equation

Gianluca Calcagni is a postdoc at Penn State working in the group of Martin Bojowald. His interests include string theory, string field theory and cosmology. Dmitry. This post is based on arXiv:0904.3744, in collaboration with Giuseppe Nardelli. Check the links for references and introductory reviews on the subject. A question. The prototype of instanton in [...]

HEP-TH/PH May 21, 2009 0 Comments
Adam Christopherson

Vorticity generation in cosmological perturbation theory

Adam Christopherson is a PhD student at Queen Mary, U. of London working with Karim Malik on cosmological perturbation theory. Dmitry. In this blog post, I will summarize recent work on vorticity generation in cosmological perturbation theory, undertaken by Karim Malik, David Matravers and myself. The main result of the paper this is based on, [...]

APPLIED, ASTRO, HEP-TH/PH May 20, 2009 0 Comments
Emre Kahya

Correcting the initial vacuum state in quantum gravity

Emre Kahya is a postdoc at Koc University, Turkey (he is a former graduate student of Richard Woodard). Dmitry. Cosmology is becoming the most active area of research in theoretical physics for the last 10 years. We now understand that initial quantum fluctuations are reasons of our existence with in the context of Inflation. This [...]

ASTRO, HEP-TH/PH May 18, 2009 0 Comments
Dmitry Podolsky

One week to spend in US

At this very moment – when you are reading this – I am flying to US, where the final destination of my trip is Cleveland. The plan is to take part in the 3-day Workshop on tests of gravity and gravitational physics at Case Western Reserve U. The schedule there is very dense and workshop [...]

Uncategorized May 17, 2009 0 Comments
Dmitry Podolsky

On gun politics and culture in US

In Russia, any talk about personal weapons/gun policy gets immediately reduced to the question of how actually effective are guns for personal self-defence on the street. On the other hand, in US general attractor seems to be discussion of the statement that personal weapons is your defence against tyranny, i.e., “armed man=free man” etc. etc. [...]

Uncategorized May 16, 2009 1 Comment
Dmitry Podolsky

Average life expectancy or more on data visualization

In continuation of my series of posts about data visualization (Dynamical maps and Gapminder), let me show you today another cool resource: interactive map of the world StatPlanet. Here is for example a map showing average age in different countries (data from 2006): Russia seems to be rather mature country on this map – average [...]

APPLIED May 16, 2009 0 Comments
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  • 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...
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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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  • 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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