Summary
We study the eigenfunctions\(p_{nm}^\mu (z,\bar z),n,m \in N,\mu \in ( - \tfrac{1}{3}, + \infty ),z \in C\), of two differential operators, which for some particular values of Μ are the generators of the algebra of invariant differential operators on symmetric spaces, havingA 2 as a restricted root system. We give the group-theoretic interpretation and the explicit form of these functions as polynomials of\(z, \bar z\) in the following cases: when, μ = 0, 1 ∀n,m ∈N; whenm = 0, ∀n ∈N and\(\forall \mu \in ( - \tfrac{1}{3}, + \infty )\). Furthermore, we write explicitly all solutions\(p_{nm}^\mu (z, \bar z) \forall \mu \in ( - \tfrac{1}{3}, + \infty )\) andn +m≤ 5. This research has applications in quantum mechanics and in quantum field theory.
Riassunto
Studiamo le autofunzioni\(p_{nm}^\mu (z,\bar z),n,m \in N,\mu \in ( - \tfrac{1}{3}, + \infty ),z \in C\), di due operatori differenziali, che per alcuni particolari valori di Μ sono i generatori dell’algebra degli operatori differenziali invarianti negli spazi simmetrioi che hannoA 2 come sistema di radici ristretto. Interpretiamo queste funzioni dal punto di vista della teoria dei gruppi e diamo la loro forma esplicita oome polinomi in\(z, \bar z\) nei seguenti casi: quando μ = 0, 1, ∀n,m ∈N; quandom = 0, ∀n ∃N e\(\forall \mu \in ( - \tfrac{1}{3}, + \infty )\). Inoltre scriviamo esplieitamente tutte le soluzioni\(p_{nm}^\mu (z, \bar z) \forall \mu \in ( - \tfrac{1}{3}, + \infty )\) en + m ≤ 5. Questa ricerca ha interessanti applicazioni in meceanica quantistica e in teoria dei campi.
РЕжУМЕ
Мы ИсслЕДУЕМ сОБстВЕ ННыЕ ФУНкцИИ\(p_{nm}^\mu (z,\bar z),n,m \in N,\mu \in ( - \tfrac{1}{3}, + \infty ),z \in C\), ДВУх ФУНкцИОНАльНых ОпЕРАтОРОВ, кОтОРыЕ п РИ НЕкОтОРых жНАЧЕНИьх Μ ьВльУтсь гЕНЕРАтОРАМИ АлгЕБР ы ИНВАРИАНтНых ДИФФЕ РЕНцИАльНых ОпЕРАтОРОВ НА сИММЕтРИЧНых пРОстВ АНстВАх, ИМЕУЩИх А2, кА к ОгРАНИЧЕННУУ кОРЕНН ОИ сИстЕМУ. Мы пРЕДлАгАЕМ ИНтЕРп РЕтАцИУ НА ОсНОВЕ тЕО РИИ гРУпп И пРИВОДИМ ьВНыИ ВИД ЁтИх ФУНкцИИ, кАк пОлИ НОМОВ\(z, \bar z\) В слЕДУУЩИх сл УЧАьх: кОгДА Μ = 0, 1, ∀n, m ∃ N; кОгДА т = 0, ∀n Е N И\(\forall \mu \in ( - \tfrac{1}{3}, + \infty )\). кРО МЕ тОгО Мы ВыпИсыВАЕМ В ьВНОМ ВИДЕ ВсЕ РЕшЕНИь\(p_{nm}^\mu (z, \bar z) \forall \mu \in ( - \tfrac{1}{3}, + \infty )\) И п + т≤ 5. пРЕДлОжЕННыИ пОДхОД МОжЕт Быть пРИМЕНИМ В кВАНт ОВОИ МЕхАНИкЕ И В кВАН тОВОИ тЕОРИИ пОль.
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This research has been carried out in the frame of the exchange program between the Academy of Sciences of the U.S.S.R. and the Consiglio Nazionale delle Ricerche (Rome, Italy) at the Steklov Mathematical Institute in Moscow, which we thank for kind hospitality.
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Peati, M.C. Eigenfunctions of the invariant differential operators on symmetric spaces havingA 2 as a restricted root system. Nuov Cim A 95, 311–324 (1986). https://doi.org/10.1007/BF02906447
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DOI: https://doi.org/10.1007/BF02906447