An award to the study of the climate, to the difficulty of understanding how this incredibly complex system behaves, to the possibility of predicting its future, to the study of revealed global warming, as it evolves. This is the meaning of the 2021 Nobel Prize in Physics awarded to three people: Syukuro Manabe, Klaus Hasselmann and Giorgio Parisi
But above all, for us Italians and Italians, physical or otherwise, it is an immense joy, to finally see the value of our school recognized in this matter, which refers to Fermi and which has often been, even recently, penalized in this noble race for the Nobel, noble but full of shoves and pitfalls.
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It is an award for his specific studies, but also for the career of Giorgio Parisi, an eclectic theoretical physicist, now president of the Accademia dei Lincei founded at the time of Galileo Galilei, who has made fundamental contributions to many fields of modern physics.
From protons to spins
From elementary particles, at the beginning of his career in the 70s, with his fundamental work for understanding to understand what happens when two protons, the positive elementary particles par excellence, collide, to statistical mechanics, that part of physics, very sophisticated, which tries to understand and predict the behavior of systems composed of many elements, particles or molecules, such as gases.
Then he worked on spin glasses, sets of microscopic magnets caged in rigid structures like crystals that arrange themselves in this prison in an apparently disordered way, revealing the law according to which in reality they are arranged, giving order to disorder, a constant figure of research. of Parisi, difficult and very important for modern technologies.