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Symmetry operators of a Hartree-type equation with quadratic potential

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Abstract

We study the symmetry properties of a nonstationary one-dimensional Hartree-type equation with quadratic periodic potential and nonlocal nonlinearity. We find an explicit form of a nonlinear evolution operator for this equation and obtain a solution to a Cauchy problem in the class of semiclassically concentrated functions. We find parametric families of nonlinear symmetry operators of a Hartree-type equation (keeping invariant the set of solutions to this equation). Using the symmetry operators, we construct families of exact solutions to the equation. This approach constructively extends the ideas and methods of group analysis to the case of nonlinear integro-differential equations.

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Original Russian Text Copyright © 2005 Lisok A. L., Trifonov A. Yu., and Shapovalov A. V.

The authors were partially supported by the President of the Russian Federation (Grants NSh-1743.2003.2 and MD-246.2003.02). A. L. Lisok was supported by a fellowship of the Noncommercial Foundation “Dynasty” at the International Center for Fundamental Physics in Moscow and by the Ministry for Education of the Russian Federation (Grant A03-2.8-794).

Translated from Sibirski\( \overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{\imath} \) Matematicheski\( \overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{\imath} \) Zhurnal, Vol. 46, No. 1, pp. 149–165, January–February, 2005.

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Lisok, A.L., Trifonov, A.Y. & Shapovalov, A.V. Symmetry operators of a Hartree-type equation with quadratic potential. Sib Math J 46, 119–132 (2005). https://doi.org/10.1007/s11202-005-0013-2

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  • DOI: https://doi.org/10.1007/s11202-005-0013-2

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