185 citations · 3.5k across the 160 of their papers we have counts for
4 papers · 2 filters
Real energies and Berry phases in all PT-regimes in time-dependent non-Hermitian theories
Andreas Fring, Takanobu Taira, Rebecca Tenney
We demonstrate that the existence of a Hermitian time-dependent intertwining operator that maps the non-Hermitian time-dependent energy operator to its Hermitian conjugate and its…
Lewis-Riesenfeld invariants for PT-symmetrically coupled oscillators from two dimensional point transformations and Lie algebraic expansions
Andreas Fring, Rebecca Tenney
We construct Lewis-Riesenfeld invariants from two dimensional point transformations for two oscillators that are coupled to each other in space in a PT-symmetrical and time-depende…
Time-dependent C-operators as Lewis-Riesenfeld invariants in non-Hermitian theories
Andreas Fring, Takanobu Taira, Rebecca Tenney
-operators were introduced as involution operators in non-Hermitian theories that commute with the time-independent Hamiltonians and the parity/time-reversal operator. He…
An introduction to PT-symmetric quantum mechanics -- time-dependent systems
Andreas Fring
I will provide a pedagogical introduction to non-Hermitian quantum systems that are PT-symmetric, that is they are left invariant under a simultaneous parity transformation (P) and…