У оквиру традиционалног колоквијума Института за физику у Београду, у среду, 29. маја 2019. у 12 часова у сали „Звонко Марић“, предавање под насловом:
Signals of the doomsday
ће одржати проф. др Дејан Стојковић (University at Buffalo – The State University of New York).
Precise Standard Model loop calculations of the Higgs potential indicate that we live in a meta-stable stable state with the lifetime of many billions of years. Ultimately, our universe will tunnel into the true vacuum state, in a process that would most likely represent the end of the universe as we know it. However, once gravity is included into calculations, small primordial black holes (as impurities) can serve as the phase transition catalyzers, and render the lifetime dangerously short. Since the first order phase transition proceeds via bubble nucleation, it would be very important to know the observable signature of the true vacuum bubble creation in our universe. We find the characteristic spectrum of gamma rays that, if observed, might represent a signal of the doomsday.