Master Mason
73. How eukaryotic cells feel direction
Eukaryotic cells present in both plants and animals are cells bounded by membranes and containing nuclei. (…)
67. Weak lensing and modifying gravity
Jochen Weller et al. are trying to constrain the modified gravity theories with weak lensing data combined with baryon acoustic oscillations and supernovae data. (…)
59. Eye on Arxiv: Quantum corrections to eta/s
I decided to turn the de Sitter discussion off for a moment, it would be more appropriate to return to it after the paper is ready anyway Hopefully, it will not take too much time for you to see it in ArXives. (…)
55. Eternal inflation: stochastic approach 3 (Inflationary perturbations 7)
Last time we have found that dynamics of the inflaton field (more precisely, its expectation value w.r.t. to the distribution among different Hubble patches) is determined by the Langevin equation. (…)
54. Eternal inflation: stochastic approach 2 (Inflationary perturbations 7)
In the previous post we have started to discuss the regime of eternal inflation realized when classical displacement of the inflaton field becomes comparable with the average amplitude of fluctuations generated at super-Hubble scale. (…)
51. Planck 2008: day 4 - Soft wall AdS/QCD
I discuss the soft wall AdS/QCD model introduced by Batell&Gherghetta, where AdS gravity and dilaton behavior providing soft wall cutoff is introduced self-consistently.
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.
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.
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.
30. Eye on ArXiv: 30 Apr 2008 - Effective QFT for inflation
Today, I think, the most interesting paper in ArXiv is the one by Steven Weinberg called “Effective field theory for inflation“. I would say, it generalizes results by Cheung et al. (…)
26. Eye on ArXiv: 24 Apr 2008 - NSR superstring measures
Today I decided to split my review of new papers in archives which were of interest to me into separate posts. (…)
11. Introduction into perturbation theory in general relativity 4 (Inflationary perturbations 3)
Today I am going to discuss equations driving the dynamics of cosmological perturbations. (…)
10. Introduction into perturbation theory in general relativity 3 (Inflationary perturbations 3)
Sorry, but today’s post is going to be rather short: the end of this week is a lot busier than usual, since I am trying to finish a couple of papers. (…)
8. Introduction into perturbation theory in general relativity (Inflationary perturbations 3)
Before turning to the discussion of the perturbation theory in general relativity, let me briefly remind the outline of the two previous posts (1 and 2). (…)
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