15 citations · 28 across the 4 of their papers we have counts for
4 papers
Quantum integrability and nonintegrability in the spin-boson model
Vyacheslav V. Stepanov, Gerhard Muller, Joachim Stolze
We study the spectral properties of a spin-boson Hamiltonian that depends on two continuous parameters (interaction strength) and (integrability swi…
Integrability and action operators in quantum Hamiltonian systems
Vyacheslav V. Stepanov, Gerhard Muller
For a (classically) integrable quantum mechanical system with two degrees of freedom, the functional dependence of the Hamiltonian operator on th…
Signatures of quantum integrability and nonintegrability in the spectral properties of finite Hamiltonian matrices
Vyacheslav V. Stepanov, Gerhard Muller
For a two-spin model which is (classically) integrable on a five-dimensional hypersurface in six-dimensional parameter space and for which level degeneracies occur exclusively (wit…
Integrability and level crossing manifolds in a quantum Hamiltonian system
Vyacheslav V. Stepanov, Gerhard Muller
We consider a two-spin model, represented classically by a nonlinear autonomous Hamiltonian system with two degrees of freedom and a nontrivial integrability condition, and quantum…