1) Gérard Mourou
2) Arthur Ashkin
3) James Peebles
4) Donna Strickland
Explanation:
The Royal Swedish Academy of Sciences (RSAS) decided to award the Nobel Prize in Physics 2019 “for contributions to our understanding of the evolution of the universe and Earth’s place in the cosmos”; with one half of the prize to James Peebles of Princeton University, United States of America (USA) “for theoretical discoveries in physical cosmology” (after the Big Bang theory) and the other half jointly to Michel Mayor from the University of Geneva, Switzerland and Didier Queloz, University of Geneva, Switzerland, University of Cambridge, United Kingdom (UK) “for the discovery of an exoplanet orbiting.