Self-adjoint approximations of the degenerate Schrödinger operator
The problem of construction a quantum mechanical evolution for the Schrödinger equation with a degenerate Hamiltonian which is a symmetric operator that does not have selfadjoint extensions is considered. Self-adjoint regularization of the Hamiltonian does not lead to a preserving probability limiting evolution for vectors from the Hilbert space but it is used to construct a limiting evolution of states on a C*-algebra of compact operators and on an abelian subalgebra of operators in the Hilbert space. The limiting evolution of the states on the abelian algebra can be presented by the Kraus decomposition with two terms. Both of these terms are corresponded to the unitary and shift components of Wold’s decomposition of isometric semigroup generated by the degenerate Hamiltonian. Properties of the limiting evolution of the states on the C*-algebras are investigated and it is shown that pure states could evolve into mixed states.
Key wordsthe degenerate Schrödinger operator C*-algebra pure and mixed states
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- 7.V. Zh. Sakbaev, “On dynamics of quantum states generated by the Cauchy problem for the Schroedinger equation with degeneration on the half-line, J. Math. Sci. 151 (1), 2741–2753 (2008).Google Scholar
- 8.V. Zh. Sakbaev, “On the Cauchy problem for linear differential equation with degeneration and the averaging of its regularization,” Sovrem. Mat. Fundam.Napravl. 43, 3–174 (2012).Google Scholar
- 20.W. I. M. Wils, “Stone-Cech compactification and representations of operator algebras,” http://hdl.handle.net/2066/107571.Google Scholar