Cole-Hopf Like Transformation for Schrödinger Equations Containing Complex Nonlinearities

Details Cole-Hopf Like Transformation for Schrödinger Equations Containing Complex Nonlinearities Cole-Hopf Like Transformation for Schrödinger Equations Containing Complex Nonlinearities

2002-02-05

arxiv.org/abs/quant-ph/0202032v1

J.Phys.A:Math.Gen. 35, 1943 (2002)

Physics

Quantum Physics

26 pages, no figures, to be appear in J. Phys. A: Math. Gen. (2002)

Scientific paper

10.1088/0305-4470/35/8/311

We consider systems, which conserve the particle number and are described by Schr\"odinger equations containing complex nonlinearities. In the case of canonical systems, we study their main symmetries and conservation laws. We introduce a Cole-Hopf like transformation both for canonical and noncanonical systems, which changes the evolution equation into another one containing purely real nonlinearities, and reduces the continuity equation to the standard form of the linear theory. This approach allows us to treat, in a unifying scheme, a wide variety of canonical and noncanonical nonlinear systems, some of them already known in the literature. pacs{PACS number(s): 02.30.Jr, 03.50.-z, 03.65.-w, 05.45.-a, 11.30.Na, 11.40.Dw

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