Lie theory and separation of variables. 5. The equations iUt + Uxx = 0 and iUt + Uxx −c/x2 U = 0 | Zendy

E. G. Kalnins | Zendy; Willard Miller | Zendy

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Lie theory and separation of variables. 5. The equations iUt + Uxx = 0 and iUt + Uxx −c/x2 U = 0

Author(s) -

E. G. Kalnins,

Willard Miller

Publication year - 1974

Publication title -

journal of mathematical physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.708

H-Index - 119

eISSN - 1089-7658

pISSN - 0022-2488

DOI - 10.1063/1.1666533

Subject(s) - harmonic oscillator , homogeneous space , formalism (music) , symmetry group , free particle , mathematical physics , lie group , schrödinger equation , classical mechanics , mathematics , representation theory , physics , quantum mechanics , pure mathematics , geometry , art , musical , visual arts , quantum

A detailed study of the group of symmetries of the time-dependent free particle Schrödinger equation in one space dimension is presented. An orbit analysis of all first order symmetries is seen to correspond in a well-defined manner to the separation of variables of this equation. The study gives a unified treatment of the harmonic oscillator (both attractive and repulsive), Stark effect, and free particle Hamiltonians in the time dependent formalism. The case of a potential c/x2 is also discussed in the time dependent formalism. Use of representation theory for the symmetry groups permits simple derivation of expansions relating various solutions of the Schrödinger equation, several of which are new

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