4 papers
Nonequilibrium Extension of the Landau-Lifshitz-Gilbert Equation for Magnetic Systems
Jeongwon Ho, B. C. Choi, F. C. Khanna +1
Using the invariant operator method for an effective Hamiltonian including the radiation-spin interaction, we describe the quantum theory for magnetization dynamics when the spin s…
Thermofield Dynamics of Time-Dependent Boson and Fermion Systems
Sang Pyo Kim, F. C. Khanna
We formulate the thermofield dynamics for time-dependent systems by combining the Liouville-von Neumann equation, its invariant operators, and the basic notions of thermofield dyna…
Quantum chaos in the heavy quarkonia
D. U. Matrasulov, F. C. Khanna, U. R. Salomov
The binding energy spectra of the heavy quarkonia are calculated by solving the Schrödinger equations with Coulomb plus confining potentials. Statistical properties of the obtained…
Chaotization of the periodically driven quarkonia
D. U. Matrasulov, F. C. Khanna, D. M. Otajanov
Classical regular and chaotic dynamics of the particle bound in the Coulomb plus linear potential under the influence of time-periodical perturbations is treated using resonace ana…