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.

100. Little celebration

Hmm… as you may have noticed, this is… actually… the post number 100 I have no idea how did it happen, how I was managing to find staff to write about for so long I remember, when I’ve just decided to start this thing, the first question I asked myself was – What all this [...]

99. Eternal inflation with many light scalar fields

I am going to briefly discuss one result from the recent paper by Peter Adshead, Richard Easther and Eugene Lim. One subject of the authors’ study is the interplay between stochastic and eternal N-flation. Let us recall what is N-flation (or assisted inflation). Suppose that we have a large number of scalar fields with equal [...]

98. Rant: Big Bubble of the housing market

This post is the next one in the series devoted to the study of the global financial crisis, its origins and possible consequences. Last time I’ve tried to argue that one of the main reasons for market bubbles to take off is the exceedingly large amount of reserve currency in circulation. Today I would like [...]

97. Second week of November on NEQNET

Physics * Quintessence on the string theory landscape? I discuss the recent paper by Kaloper and Sorbo explaining how quintessence can be realized on the string theory landscape, as follows from the title. The post also contains small introduction explaining what is quintessence field and why we want so hard to find it on the [...]

96. Quintessence with w less than -1

In another very interesting recent paper on quintessence the Italian Team (Creminelli, D’Amico, Norena, Vernizzi – and warmest regards from Helsinki if you read it, Filippo ) is trying to construct an reliable example of QFT that behaves like the quintessence with ?ghost-like? effective equation of state . (If you want first two know what [...]

95. One second order phase transition: video

Discussion of the Shaposhnikov-Tkachev paper has somewhat inspired me as you might expect, and I decided to browse the net for a bit That’s what I have found – what you see below is a phase transition of the second kind, the one where correct degrees of freedom are decribed by CFT at

94. Quantum scale invariance on the lattice

Arguably, the most interesting paper in archives today is the one by M. Shaposhnikov and I. Tkachev. As the authors state, they have found a scheme leading to a non-perturbative definition of lattice field theories scale invariant on the quantum level. I have so many problems understanding this paper, that I don’t even have a [...]

93. Second order hydrodynamic coefficients in some field theories (like QCD)

By definition, we call an IR mode of a quantum field theory hydrodynamical, if its relaxation time goes to infinity, while its wave length . If this mode is hydrodynamical, does it mean that its evolution is determined by one of the equations we study in hydrodynamics – like, say, Euler equation or Navier-Stokes equation? [...]

92. A new theory of galaxy formation needed

It is well known that an ordinary galaxy can be described by seven physical parameters: total mass, baryon fraction, age, specific angular momentum, specific heat energy (related to random motion within the galaxy), its radius and concentration. According to the virial theorem, only six of them can be independent. This gives quite a bit of [...]

91. So sorry, but I cannot help hacking Google Blog Search

Sorry, my dear readers, but I cannot help trying the following strategy in order for the Google Blog Search to send a huge traffic to NEQNET… Some of those people who will come around may be also interested in science! According to Exler*, this strategy perfectly helps one to get into the Yandex Top 100 [...]