Tag Archives: baryons

LOG#180. Hadronic mysteries.

Posted on by September 5, 2019
Reply

Hi, everyone! Today is not today. Elementary particles are known to fall in two species, taking for granted the Standard Model (SM): bosons and fermions. The SM bosons are photons, gluons, W and Z bosons and the recently found Higgs … Continue reading →

LOG#107. Basic Cosmology (II).

Posted on by September 9, 2019
Reply

Evolution of the Universe: the scale factor The Universe expands, and its expansion rate is given by the Hubble parameter (not constant in general!) Remark  (I): The Hubble “parameter” is “constant” at the present value (or a given time/cosmological age), … Continue reading →