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208. Twitter updates for 2009-01-27

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207. Edward Farhi explains at Google why physicists need LHC

It’s great that Googlers are interested to hear talks by science experts, maybe it will help them to understand what is actually related to science and what is not :-) Because right now the ads that AdSense serves to science related sites and blogs are terrible – to the degree they can be hardly called contextual advertising :-) Check out for example Lubos’ blog – he has all kinds of funny ads like “Physicsofthemind.net” and “Guru Krishna Brahaburatiobha is your true teacher” etc. etc. LOL

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206. A conference on black holes at PI

Black hole information loss

A very interesting conference organized by Rob Meyers, Herman Verlinde and Jaume Gomis takes place currently in PI. The topic of the conference is related to information loss in black holes and unitarity of quantum gravity in general (the one that I tried to discuss so unsuccessfully on the blog in December – I am a kind of being better prepared now :-) ).

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204. Twitter updates for 2009-01-25

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203. Quantum Hall effect. One open question

I cannot finish discussing quantum Hall effect without explaining why, after all those years of study, Laughlin wavefunction and composite fermions, it still remains interesting for a condensed matter theorist.

The reason is existence of the state with \nu=5/2, the only state with even denominator of the filling factor :-)

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