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.

40. Inflation: field-theoretic description (Inflationary perturbations 4)

I discuss simplest field theoretic models of inflation, dynamics of inflation at the level of background and Hamilton-Jacobi formalism for inflation.

39. Schwinger-Keldysh: Quasiclassical Keldysh action (non-equilibrium diagrammatic methods 1)

I discuss quasi-classical approximation for the Schwinger-Keldysh action and show that the quasi-classical evolution is described by the Langevin equation.

38. And again about effective QFT for inflation

I show that effective QFT corrections to correlator of Mukhanov variable found by Armedariz-Picon et al. are due to effects of eternal inflation.

37. Eye on PRL – On statistical theory of developed turbulence

I discuss developed turbulence a bit: dynamics of vorticity in the inertial interval and Kolmogorov cascade.

36. Eye on ArXiv: 6 May 2008 – Where does the cosmological perturbation theory actually break down?

I discuss the issue of cosmological perturbation theory breakdown and its relation to the regime of eternal inflation

35. Lectures on AdS/CFT by Maldacena

Lectures on AdS/CFT by Juan Maldacena

34. Several questions about de Sitter

I ask several questions about Green’s functions on de Sitter

33. Schwinger-Keldysh: information carried by Keldysh Green’s functions (nonequilibrium diagrammatic methods 1)

I discuss information carried by Keldysh Green’s functions in the non-equilibrium quantum field theory.

32. Eye on ArXiv: 30 Apr 2008 – Curvature perturbation from false vacuum inflation

Power spectrum of primordial perturbations is calculated for inlationary models with false minima of the inflaton potential.

31. Schwinger-Keldysh: brief review (Nonequilibrium diagrammatic methods 1)

I briefly discuss what physical problems require the use of non-equilibrium diagr. QFT methods. I also review the structure of Green functions in SK formalism.