Yuri Yappa

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Yuri Yappa
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Yuri Andreevich Yappa (

classical electrodynamics and theory of spinors
.

Biography

Yuri Yappa was born in

USSR in the family of doctor Andrei Yappa (German: Andreas Jappa, Russian: Андрей Яппа
).

In 1941, because of the German invasion in the Soviet Union and the Siege of Leningrad he had to interrupt his regular education and to start working. During the whole Siege of Leningrad he worked at the hospital where his father also worked. In 1944, he was awarded of medal "For the Defence of Leningrad". In parallel with the work in the hospital, he continued his self-education, so that in 1944 he passed exams for the entire course of the school and started to study at the Physical Faculty of the Leningrad University. During the winter of 1944-1945 he with a few other students alternated their studies with a work as stokers in the university's boiler-house.[1] Yuri Yappa also started to work at the laboratory of molecular physics, but later, following an advice of its head Viktor Tsvetkov, joined a theoretical physics group.

In 1949 he graduated from the Leningrad University, then continued postgraduate studies there at the Chair of Theoretical Physics headed by Vladimir Fock. Since then Yuri Yappa was the nearest collaborator of Vladimir Fock till the death of the latter in 1974.

Academic career

In 1953 Yuri Yappa earned his PhD (Russian: кандидат наук) degree with a thesis on the relativistic theory of elementary particles.[2]

Yuri Yappa in 1957.

In 1954–1956, he led a group of theoreticians at the Institute of Nuclear Problems of the

elementary particles and provided theoretical explanation of experimental results on proton scattering. In the same period he also edited two collective monographs in the series "Problems of Modern Physics".[3][4]

In 1956 the Institute of Nuclear Problems was united with the Electrophysical Laboratory of

Elementary Particles (nowadays the Chair of High Energy and Elementary Particle Physics[5]
).

Yuri Yappa was a senior research scientist (

.

Scientific work and teaching

Yuri Yappa led a number of theoretical courses in the Leningrad/St.-Petersburg University, including his well-known courses of

classical electrodynamics, which served the base of his graduate book (coauthored by Viktor Novozhilov) Electrodynamics,[6] whose revised edition was published and republished in English.[7] His graduate text on the theory of spinors was finished by his University colleagues and published posthumously.[8]

Honors and awards

Works published in English

  • Novozhilov, Yu. V.; Yappa, Yu. A. (1986) [1981]. Electrodynamics. Translated from Russian by V. I. Kisin (Revised ed.). Moscow: Mir Publishers.
  • Levitskii, B. A.; Yappa, Yu. A. (1981). "Covariant generalization of Noether's theorems for fields with spin". Theoretical and Mathematical Physics. 48 (2): 715–721.
    S2CID 120581499
    .
  • Levitskii, B. A.; Yappa, Yu. A. (1982). "Structure of the energy-momentum tensor and the spin tensor in a covariant theory of a spinor field". Theoretical and Mathematical Physics. 53 (2): 1107–1113. .
  • Yappa, Yu. A. (1987). "On the interpretation of anticommuting variables in the theory of superspace". Letters in Mathematical Physics. 14 (2): 157–159. .
  • Yappa Yu. A. (1988) "Notes on the .

References

  1. ^ Шухтина М.А. (2004-05-21). Как МейБоДо сохранили непрерывность образования на физическом факультете [How "MeiBoDo" preserved the contunuity of education at the physical faculty]. Санкт-Петербургский университет (in Russian) (№ 14–15 (1671–72)). {{cite journal}}: |issue= has extra text (help)
  2. ^ Яппа Ю. А. (1953). Шредингеровские формы релятивистски-инвариантных уравнений для элементарных частиц и некоторые вопросы их физической интерпретации [Schrödinger Forms of Relativistically Invariant Equations for Elementary Particles and Some Problems of Their Physical Interpretation (PhD Thesis)] (in Russian). Ленинград: Лениградский государственный университет.
  3. ^ Ю. А. Яппа, ed. (1955). Систематика элементарных частиц [Systematics of Elementary Particles]. Проблемы современной физики (in Russian). Vol. 10. Москва: Издательство иностранной литературы.
  4. ^ Ю. А. Яппа, ed. (1956). Метод Тамма–Данкова [Tamm–Dancoff method]. Проблемы современной физики (in Russian). Vol. 11. Москва: Издательство иностранной литературы.
  5. ^ Site of the Chair of High Energy and Elementary Particle Physics of the Saint-Petersburg State University
  6. ^ Новожилов Ю. В.; Яппа Ю. А. (1978). Электродинамика [Electrodynamics] (in Russian). Москва: Наука.
  7. ^ Novozhilov Yu. V.; Yappa Yu. A. (1986) [1981]. Electrodynamics. Translated from Russian by V. I. Kisin (Revised ed.). Moscow: Mir Publishers.
  8. .

Further reading