Yves Ayant

Yves Ayant
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Yves Ayant (born on January 6, 1926 - June 8, 2016) was a French theoretical physicist and professor of at the University of Grenoble. Ayant received the first Paul Langevin Prize in 1957 and his books have been used as teaching texts in several universities, and been translated for use as textbooks.

Life

Education

After passing his agrégation in 1950, Ayant began work on a thesis in a team headed by Pierre Grivet (1931 s). Ayant studied at the École normale supérieure (Paris) from 1946 and received his doctorate from the Sorbonne in 1954 with a dissertation on nuclear physics entitled Contribution à l'étude des formes et largeurs de raies dans les résonances nucléaires. Yves Ayant defended his thesis in 1954 before a jury that included Alfred Kastler and Louis Néel, two future Nobel Prize winners.

Teaching

Ayant was Professor of theoretical and advanced physics at the Grenoble Faculty of Science (1961-1970), then at the Grenoble 1 Scientific and Medical University (1971-1994). He was the first to teach quantum mechanics in Grenoble, in a course for researchers followed by many colleagues. He also taught, at various levels, statistical physics and numerical analysis, in particular group theory. He supervised several thesis students at both the university and the Grenoble Nuclear Research Center (CENG).

Academic work

As a theoretical physicist, Ayant dealt with magnetism, nuclear magnetic resonance, electron spin resonance and nuclear quadrupole resonance, that corresponded to the experimental orientation of the University of Grenoble under Louis Néel as a center of magnetism research in France, interpreting the paramagnetic susceptibility behavior of rare-earth gallates and developing crystal field effects in solids and their applications to electron paramagnetic resonance (EPR). Ayant was the "in-house theorist" at the Laboratoire de Spectrométrie Physique (now Laboratoire Interdisciplinaire de Physique, LIPhy) headed by Michel Soutif, whose aim was to study matter using a broad repertoire of spectroscopic techniques. Ayant then published two fundamental papers on relaxation phenomena in liquid nuclear magnetic resonance (NMR). In addition, he often received numerous researchers, including chemists, who came to him for help in interpreting their experimental results.

Ayant also worked as a consultant at the (CENG) of the French Atomic Energy Commission, where he contributed to the development of NMR magnetometers for measuring magnetic fields of the order of magnitude of the earth's field.

Ayant was particularly interested in the shapes and displacements of lines, which led him to introduce the notion of a correlation function of a quantum variable, whose main properties he established simultaneously with the Japanese physicist Ryogo Kubo, but independently. This notion transcended its application to (NMR) and was taken up in numerous theories of dynamical effects. According to Élie Belorizki and Pierre Aberbuch, Yves Ayant published his work in the Journal de Physique, in French, while Kubo did so in English, which explains why the latter is more often cited.

Awards

• Ayant received the first Paul Langevin Prize in 1957.

Works

Thesis

• Ayant, Yves (1955). Contribution à l'étude des formes et largeurs de raies dans les résonances nucléaires (Thesis) (in français). OCLC 33272554.

Books

• ————— (1956). Electronique théorique. ENSEHRG. Search this book on
• —————; Belorizky, Élie (1969). Cours de mécanique quantique: maîtrise de physique (in français). Search this book on
• —————; Abragam, A.; Bleaney, B. (1971). Résonance paramagnétique électronique des ions de transition (in français). Search this book on
• —————; Borg, Marcel (1971). Fonctions spéciales à l'usage des étudiants en physique. Maîtrise de physique (in français). Paris: Dunod. Search this book on
  • —————; Borg, Marcel (1974). Funciones especiales (in español). Translated by Carcedo, A. Madrid: Alhambra. ISBN 84-205-0504-8. Search this book on
• ————— (1992). Fonctions hypergéométriques, fonctions elliptiques et fractions continues. Collection Grenoble sciences. Université Joseph Fourier. ISBN 978-2-908019-17-9. Search this book on
• —————; Belorizky, Élie (1995). Cours de mathématiques pour la physique. Collection Grenoble sciences (in français). Université Joseph Fourier. ISBN 978-2-908019-43-8. Search this book on
• —————; Belorizky, Élie (2000-05-10). Mécanique quantique. Avec exercices et problemes résouls. Sciences Sup. (in français) (3rd ed.). Dunod. ISBN 978-2-10-004742-0. Search this book on
• —————; Belorizky, Élie (2007). Mécanique quantique. Cours avec 87 exercices corrigés. Sciences Sup. Cours et exercices corrigés - Master - Ecoles d'ingénieur (in français) (3rd ed.). Dunod. ISBN 978-2-10-051019-1. Search this book on

Articles

• ————— (1956). "La théorie des temps de relaxation en résonance quadrupolaire". Journal de Physique et le Radium. 17 (4): 338–342. doi:10.1051/jphysrad:01956001704033800.

References

Sources

• Averbuch, Pierre (2017). "AYANT (Yves), né à Ollioules (Var) le 6 janvier 1926, décédé à Grenoble (Isère) le 8 juin 2016. – Promotion de 1946 s." L'Archicube. École normale supérieure (21): 117–119.
• Belorizky, Élie; Averbuch, Pierre (2016). "Ayant, Yves - 1946s". Association des anciens élèves, élèves et amis de l’École normale supérieure.
• De Swiniarski, René (1999-03-27). "Les débuts de la physique nucléaire à Grenoble" (PDF). Bulletin de la société francaise de physique (121): 4.
• Persée. "Ayant, Yves". Ministry of National Education of France.
• Société Française de Physique. "Prix thématiques".

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