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LOUIS DE BROGLIE

Tibor Halaši, Snežana Kalamković, Martin Kalamković, J. M. Kalamković

Published Jan 1, 2024• 0 citations
Publisher

Abstract

The physicist Louis de Broglie (Louis Victor Pierre Raymond, 7th Duc de Broglie) conducted revolutionary research in the field of quantum mechanics. In his doctoral thesis (1924), he pointed out the dual nature of matter, and for that discovery he received the Nobel Prize in Physics (1929).
DOI
10.46793/phys.chem24ii.749h

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Louis de Broglie received the Nobel Prize for his Ph.D. It is an extreme statement but not as extreme as one might think. In his 1924 doctoral dissertation, he asserted that all matter had both wave and particle properties. His thesis stemmed from Einstein's recognition that light had particle properties. Until then it was assumed, and every experiment had shown, that light was strictly a wave. With the photoelectric effect explained by Einstein, light became an example of “wave-particle duality.” Before de Broglie, it was the only example. De Broglie proposed that all matter had both wave and particle properties. De Broglie found the relationship between the two: the particle momentum was inversely proportional to the wavelength. Experimental evidence subsequently confirmed his theory, hence the Prize.
In 1923 Louis de Broglie (1892-1987) discovered the material waves and six years later received the Nobel price for this discovery. Apart these well known facts this French physicist nevertheless seems to be forgotten. Details of his life are as unknown as his efforts to describe quantum mechanics in a deterministic and objective way. Especially the actual discussion concerning the interpretation of quantum mechanics seems to justify a deeper occupation with the scientific work of Louis de Broglie. In this context the important influence of Albert Einstein is of special interest; for his photons announce the existence of material waves and it may surprise that Einstein himself did not postulate them. The basis of this short scientific biography are the publications of de Broglie (a complete bibliography is given at the end), some more or less short memories of his students and some unpublished documents found in the "Archives de l'Academie des Sciences" at Paris. The original text of the correspondence between de Broglie and Einstein is enclosed in German translation in the appendix.
A physically real wave associated with any moving particle and travelling in a surrounding material medium was introduced by Louis de Broglie in a series of short notes in 1923 and in a more complete form in his thesis defended in Paris on the 25th November 1924. This result, recognised by the Nobel Prize in 1929, gave rise to a major direction of "new physics" known today as "quantum mechanics". However, although such notions as "de Broglie wavelength" and "wave-particle duality" form the basis of the standard quantum theory, it actually only takes for granted (postulates) the formula for the particle wavelength and totally ignores the underlying causal, realistic and physically transparent picture of wave-particle dynamics outlined by Louis de Broglie in his thesis and further considerably developed in his later works, in the form of "double solution" and "hidden thermodynamics" theory. A price to pay for such rough deviation from the original de Broglian realism and consistency involves fundamental physics domination by purely abstract and mechanistically simplified schemes of formal symbols and rules that have led to a deep knowledge impasse justly described as "the end of science". However, a new, independent approach of "quantum field mechanics" (quant-ph/9902015, quant-ph/9902016, physics/0401164) created within the "universal science of complexity" (physics/9806002) provides many-sided confirmation and natural completion of de Broglie's "nonlinear wave mechanics", eliminating all its "difficult points" and reconstituting the causally complete, totally consistent and intrinsically unified picture of the real, complex micro-world dynamics directly extendible to all higher levels of unreduced world complexity.
Abstract The particle-wave duality was perhaps the most startling outcome of the conceptual revolution that swept through physics during the first three decades of the twentieth century. That photons—the packets, or quanta, of light— behaved in some respects as particles, in others as waves, had already been noted when the due (later Prince) Louis de Broglie conjectured that the same might be true of other particles, such as electrons. Sitting in an eyrie in the Eiffel Tower as a meteorological observer during the First World War, de Broglie had time to ruminate on these matters and to develop an equation relating the momentum of the particle to its wavelength. This formed the substance of his doctoral dissertation, which he submitted to the University of Paris in 1924 and which earned him the Nobel Prize five years later.