Since his mysterious disappearance in 1938, there have been many biographical accounts of Ettore Majorana's short life. Yet, his scientific work and his influence on the development of physics are often left in the background. The thrust of this article is precisely to shed light on them. In fact, some of Majorana's articles were only understood after World War II. Notably, this was the case of his last article. Written in 1937, it represents the best long-lasting contribution of Ettore Majorana to particle physics. He envisages, thanks to a new formalism, that neutrinos could be identical to their own antiparticles. The answer to this question posed by Majorana more than half a century ago may be found thanks to several experiments now carried out. It could give a lightning on the nature of dark matter and an explanation to the dominance of matter over antimatter in our universe.
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Majorana's approach to nonadiabatic transitions validates the adiabatic-impulse approximation.
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Theoretical Quantum Physics Laboratory, Cluster for Pioneering Research, RIKEN, Wakoshi, Saitama, 351-0198, Japan.
The approach by Ettore Majorana for non-adiabatic transitions between two quasi-crossing levels is revisited and significantly extended. We rederive the transition probability, known as the Landau-Zener-Stückelberg-Majorana formula, and introduce Majorana's approach to modern readers. This result, typically referred as the Landau-Zener formula, was published by Majorana before Landau, Zener and Stückelberg.
View Article and Find Full Text PDF[A bibliometrical analysis of Majorana's scientific legacy].
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C.P. 8888, Montréal, Québec, Canada, H3C 3P8,
This article analyzes the reception of Ettore Majorana's articles by tracing all the references made to them since the beginning of the 1930s. This methodology allows me to show that Ettore Majorana's 1937 piece on spin-1/2 particles was largely rediscovered during the 1960s, but also to identify the people who actively promoted Majorana's work, which has loomed larger in scientific debates since the 1970s. Analyzing co-citations, this article shows the conceptual network in which Majorana's work fits.
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LARSIM, CEA, Saclay, Orme des Merisiers, F-91191, Gif-sur-Yvette cedex, France,
« Il valore delle leggi statistiche nella fisica e nelle scienze sociali » is Ettore Majorana's only work on science. It offers a critique of classical determinism, establishing an analogy between the laws of quantum mechanics and social science and arguing that both are intrinsically linked to probability. This article first studies this argument from the standpoing of metaphysics, physics, and sociology, and then assesses the significance of this transversal epistemology.
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LARSIM, CEA, Saclay, Orme des Merisiers, F-91191, Gif sur Yvette cedex, France,
Since his mysterious disappearance in 1938, there have been many biographical accounts of Ettore Majorana's short life. Yet, his scientific work and his influence on the development of physics are often left in the background. The thrust of this article is precisely to shed light on them.
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