As I understand it, the multiverse concept arises as a consequence of the standard inflationary scenario which involves one or more scalar fields “rolling down” the side of a potential hill, causing an exponential increase in the “size” of the Universe soon after the Big Bang. Now the form of the potential itself varies from… Continue reading Multiverse, multiverse, where art thou?
Black holes are formed due to the gravitational collapse of matter – ordinary matter, consisting of the particles and excitations of the Standard Model that we know and love. These include electrons, photons, neutrinos, quarks, mesons etc, and their respective anti-particles. General Relativity tells us that the properties of (macroscopic) black holes are universal, in… Continue reading Elementary particles and quantum geometry