• QIONGTAO XIE

      Articles written in Pramana – Journal of Physics

    • Analytical results for periodically-driven two-level models in relation to Heun functions

      QIONGTAO XIE

      More Details Abstract Fulltext PDF

      We introduce three different types of periodically-driven multiparametric two-level models whoseanalytical solutions are given in terms of Heun functions. These results are applied to obtain exact analytical results for certain types of periodic potentials and asymmetric double-well potentials. In particular, it is shown that underspecial parameter conditions, an experimentally realised periodic potential supports the exact in-gap solutions. In the asymmetric double-well potentials, some exact results of the bound-state wave functions and associated energiesare found in explicit form.

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