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quant-ph2008
Quantum chaotic systems with arbitrarily large Ehrenfest times
Maciej Kuna
A class of time independent and physically meaningful Hamiltonians leads to evolution of observable quantities whose Ehrenfest times are arbitrarily large. This fact contradicts th…
math-ph2008★ 1 cited
On the von Neumann equation with time-dependent Hamiltonian. Part II: Applications
Maciej Kuna, Jan Naudts
This second part deals with applications of a general method to describe the quantum time evolution determined by a Schroedinger equation with time-dependent Hamiltonian. A new asp…
math-ph2008★ 1 cited
Solving the von Neumann equation with time-dependent Hamiltonian. Part I: Method
Maciej Kuna, Jan Naudts
The unitary operators U(t), describing the quantum time evolution of systems with a time-dependent Hamiltonian, can be constructed in an explicit manner using the method of time-de…