22. About decoherence in quasi de Sitter space

My discussion of disorder on the landscape with Lubos continues (L - Lubos, D - me). (…)


21. About probabilities in cosmology (and general) and in stochastic inflation in particular

Discussion was initiated by the question “what is the physical meaning of time \tau in vacuum dynamics equations” that was smoothly transformed into the question “what is the meaning of probability P in the vacuum dynamics equations”. My answer was that \tau is the world time for the 4-dim observer and P is the probability for him to measure a given value of the cosmological constant. Lubos replied:


20. More on KS throat cloaking…

Was thinking about recent paper by Alex Buchel and Lev Kofman… and found that I have a couple of naive questions:
1) cloaking is 5 dim picture (well, 10-dim) - i.e., throat for bulk CY observer is seen as AdS black hole. (…)


19. Disorder on the landscape: non-technical intro

Today I will kindly allow myself a bit of selfpromotion As I said yesterday, our paper “Disorder on the landscape” is finally out (by the way, Lubos Motl already has a very nice post about it on his blog). (…)


18. Eye on ArXiv: 15 Apr 2008 - Transplanckian physics, brane cosmology and holographic mesons

Sorry for being quiet for so long. The reason is we were finising a paper, asked for comments and got a lot of them. The paper is finally submitted to appear on ArXiv in tomorrow’s listings. (…)