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Recent posts
184. Scientist’s gadgets: Polycom
Dear readers, yesterday you did not have the pleasure to read (or were not disappointed by ) a new post at NEQNET, but I do have a good excuse – first time in my life I have delivered a 1 hour teleconference seminar overseas. I did need some time to prepare the presentation as well [...]
183. Constraining photon-hidden photon oscillations via CMB
This is a guest blog post by Alessandro Mirizzi, Research Fellow at Max Planck Institute of Physics, Munich. Dmitry. Recently, Javier Redondo, Guenter Sigl and I have completed a study on the possibility to constrain photon-hidden photon oscillations using the extremely precise measurements of the cosmic microwave backgroung (CMB). Here I discuss our results, presented in [...]
182. Competing bounds on the present-day time variation of fundamental constants
This is a guest blog post by Thomas Dent from the U. of Heidelberg. Dmitry. My recent preprint [arxiv:0812.4130] with Steffen Stern and Christof Wetterich from Heidelberg is perhaps more experimentally minded than most. We consider a question that has been attracting attention periodically since about 2001 – are the parameters of the Standard Model [...]
180. Cosmology of F-theory GUTs
This is a guest blog post by Jonathan Heckman who is working at Harvard with Cumrun Vafa. Dmitry. Let me first thank Dmitry for the invitation to write a blog entry on my recent work with A. Tavanfar and C. Vafa entitled “Cosmology of F-theory GUTs”, arXiv:0812.3155 [hep-th]. Before proceeding to a discussion of the [...]
179. Followup on ekpyrosis and phoenix universe
As follows from the title, this is a followup on the guest post “The return of the phoenix universe” by Jean-Luc Lehners. Jean-Luc kindly agreed to answer to a couple of questions related to physics behind ekpyrosis for NEQNET. In what follows D. – me, J. – Jean-Luc. D. It is interesting that about a [...]
178. My twitter updates for 2009-01-13
Today I decided to start publishing my daily Twitter updates on the blog. One reason is that huge amount of interaction with my readers currently happens on Twitter, and sometimes something really interesting comes out of this interaction. Another reason to publish updates is to acknowledge my twitter followers – biologists, physicists, geologists, businessmen and [...]
177. Visionary, by James Kotsybar
He looked into the lens-system and saw an unimaginably small world grow. Now does this image in history draw from van Leeuwenhoek or Galileo? Through lenses both passed to another realm in essence, since their broadened reference frame allowed them visions that could overwhelm. Then for everyone nothing stayed the same. The vaster one’s view [...]
175. Holographic principle for dummies
Since today is Sunday, nobody should be allowed to overload your brain with too technical discussion of a new paper in ArXiv (there are no new papers till Monday, anyway!). But does it mean that I will devote part of this Sunday to posting something about financial crisis instead of science? No way! Since, as [...]
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Large non-Gaussianity from axion inflation
January 31, 2012 14:01 -
On strong disorder renormalization
March 18, 2011 20:03 -
Relaunching NEQNET
January 20, 2011 21:01 -
Saturday’s photoguess: what does this monkey symbolize?
June 20, 2009 19:06 -
Dynamics of space storm
June 19, 2009 12:06
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Micro: Can 2 question provide a common solution? Black holes, information loss paradox and Ultra high energy cosmic rays. ...
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James Ph. Kotsybar: SAGITTARIUS A* -- James Ph. Kotsybar Mysteriously cloaked, obscure despite Interior illuminating glare, Long ...
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cad: The presentation can be found in several formats at http://pirsa.org/08110051/...
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Leo: Ok I have a question: if a black hole is supermassive, say 100 billion solar mass, let's suppose Alice fells int...
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superkuh: I am glad you are back! No more disapointing weekly refreshings of that monkey....
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Ariel Amir: Very interesting, thanks. It indeed seems to be very close to what we discuss here. I wonder whether the distributi...
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