Physics

"We consider the scattering of charged W bosons [...] the sum of all diagrams still diverges as s/Mw^2. Heavy leptons cannot help us, so the only solution is to introduce a scalar particle which…

RETRACTION: I have decided to retract three blogs (Deriving … 4/5, 5/5, 6/5+1). I was unable to figure out a reasonable statement concerning gauge symmetry. When the blogs were initially written, I…

Fabrizio Tamburini (left) is an old friend - I have known him since 1976, when we both used to attend the gatherings of the newborn Associazione Astrofili Veneziani, at the Lido of Venice. The love…

To say that a system implements a given computation is to say that something about that system - some aspect of its behavior - is described by the computation. It is thus a way of characterizing the…

One of the issues that emerged in the discussion of whether researchers should be bloggers is the fact that it is always dangerous to wear multiple "hats", i.e. carrying multiple responsibilities…

Wow, those folks in Stockholm do pay attention to this blog. With a delay of a year (ok, you are forgiven, graphene is cute stuff after all), one half of the ten million kronor goes to SAUL…

Tomorrow I will fly to Frascati, where are the headquarters of INFN, the italian institute for nuclear physics. I will attend to an event there, called "Incontri di Fisica" (Physics meetings), where…

This year’s Nobel Prize in physics goes to Saul Perlmutter, who shares it with Adam Riess and Brian P. Schmidt, all having been vital in the discovery of that the universe’s expansion is speeding up…

RETRACTION: I have decided to retract three blogs (Deriving … 4/5, 5/5, 6/5+1). I was unable to figure out a reasonable statement concerning gauge symmetry. When the blogs were initially written, I…

Relativity is by itself a very cross-disciplinary subject. Not only from the point view of Physics, Mathematics, Astrophysics, Philosophy... but also from that of Ethics, History and other Social…