Posts by Dmitry Podolsky
Dmitry Podolsky has got his PhD from Landau Institute for Theoretical Physics. He currently works as postdoc at Case Western Reserve University. He is also one of the editors of NEQNET.
80. Watching worlds collide: bubbles, bubbles, bubbles
Getting tired of malicious attacks by anti-landscapists, Spencer Chang, Matt Kleban and Thomas Levi released a paper about one observable effect on string theory landscape. As we remember, when people talk about dynamics of eternal inflation on the string theory landscape (see for example my own paper and references therein), they keep in mind the [...]
79. Obama is a president. What is there for us in it?
The people of the United States have not failed. In their need they have registered a mandate that they want direct, vigorous action. They have asked for discipline and direction under leadership. They have made me the present instrument of their wishes. In the spirit of the gift I will take it. Franklin Delano Roosevelt, [...]
78. A talk on scalar QFT, exact renormalization group and RG fixed points
Oliver Rosten who, as I gather, now works in the U. of Sussex with Daniel Litim, recently gave a talk on exact renormalization group in Perimeter. The main conclusion is that there are non non-trivial RG fixed points for a scalar QFT in D=4 (that is, no fixed points except the gaussian one corresponding to [...]
77. 99 subsribers to RSS feed
Hi friends Currently, there are 99 subscribers to my feed at FeedBurner, see the counter in the footer! Are you by a chance reading this blog but not yet subscribed? Please be my friend (and the subscriber number 100!) and make me happy for the end of the day You could either subscribe to the [...]
76. Chaos in quantum field theory
Clearly, the topic of interplay between confinement and chaos in classical YM got some interest, so let me continue. Contrary to what the title says, I shall not mention “confinement” this time, focusing on “chaos” instead. Our debate got heated up quite a bit in the comments to the last post Marco is explaining on [...]
75. Chaos in YM and confinement
I think we are currently having a somewhat fruitful discussion with Marco Frasca on his blog. The question is how relevant is chaotic behavior of classical solutions of Yang-Mills equations of motion for the quantum theory (or, more precisely, for YM at strong coupling). Marco argues that it is absolutely irrelevant, and strong couping behavior [...]
73. How eukaryotic cells feel direction
Eukaryotic cells present in both plants and animals are cells bounded by membranes and containing nuclei. Often they contain other organelles such as mitochondria or chloroplasts, but this is not what will interest us at this time – let us focus on membranes. Properties of these membranes are rather peculiar: they actually represent a nice [...]
72. Publishers and monkeys
James Kotsybar was kind enough to send me another poem of his, which, I think, will be fun to reproduce here… All I can conclude from it is that nowadays it is much harder to get published for a poet that for a physicist MONKEYS SHINED – James Ph.Kotsybar The keyboard monkeys, ad infinitum, may [...]
71. More talks: M2 branes and AdS/CFT, correlations of low multipoles in CMB
Here is another couple of recent talk at Perimeter Institute worth if not watching, but at least going through the presentation file: 1. Igor Klebanov from Princeton discusses M2 branes and AdS/CFT correspondence. M2 branes are very hot topic in string theory now (see the review of membrane minirevolution on the Lubos Motl’s blog). Let [...]