Tamaño de la web, y de los buscadores

La estadistica clasica es la netcraft survey Realmente la cuenta de “active hosts” hay que considerarla limitada por el numero de direcciones posibles IPv4. Consideremos una busqueda de una sola palabra, “jailbreak”. El buscador P2P yacy, que suma en toda la red unos 2 o 3 mil millones de paginas, ofrece “1-100 of 851 ;…

Families from USp(32)

The same trick to descent to three generations can be done starting from the 495 of Sp(32). We are on it, as usual, in physicsforums //www.physicsforums.com/threads/the-wrong-turn-of-string-theory-our-world-is-susy-at-low-energies.485247/page-13#post-5913658 As noted there, we still lack of a variant showing the L-R chirality of the SM. I wonder if we could use some exotic models from E6 or E8…

wrong turns

Woit (What the Hell is Going On?) and Motl (wrong-turn-basins-gut-critics) have sparked a new round of the discussion on the existence, or not, of a wrong turn in the development of theoretical particle physics. The excuse this time is some comments of Nima Arkani-Hamed in a couple of recent lectures, but the running joke is…