Abstract:
According to classical result of Moser [1] a real-analytic Hamiltonian with one and a half degrees of freedom near a hyperbolic fixed point can be reduced to the normal form by a real-analytic symplectic change of variables. In this paper the result is extended to the case of the non-commutative algebra of quantum observables.We use an algebraic approach in quantum mechanics presented in [2] and develop it to the non-autonomous case. We introduce the notion of quantum non-autonomous canonical transformations and prove that they form a group and preserve the structure of the Heisenberg equation. We give the concept of a non-commutative normal form and prove that a time-periodic quantum observable with one degree of freedom near a hyperbolic fixed point can be reduced to a normal form by a canonical transformation. Unlike traditional results, where only formal theory of normal forms is constructed, we prove a convergence of the normalizing procedure.
Keywords:
algebra of quantum observables, quantum normal forms, non-autonomous quantum dynamics.
Citation:
A. Yu. Anikin, “Normal Form of a Quantum Hamiltonian with One and a Half Degrees of Freedom Near a Hyperbolic Fixed Point”, Regul. Chaotic Dyn., 13:5 (2008), 377–402
\Bibitem{Ani08}
\by A.~Yu.~Anikin
\paper Normal Form of a Quantum Hamiltonian with One and a Half Degrees of Freedom Near a Hyperbolic Fixed Point
\jour Regul. Chaotic Dyn.
\yr 2008
\vol 13
\issue 5
\pages 377--402
\mathnet{http://mi.mathnet.ru/rcd585}
\crossref{https://doi.org/10.1134/S1560354708050018}
\mathscinet{http://mathscinet.ams.org/mathscinet-getitem?mr=2448337}
\zmath{https://zbmath.org/?q=an:1229.81126}
Linking options:
https://www.mathnet.ru/eng/rcd585
https://www.mathnet.ru/eng/rcd/v13/i5/p377
This publication is cited in the following 4 articles: