42 citations · 113 across the 4 of their papers we have counts for
4 papers
Non-Hermitian Hamiltonians of Lie algebraic type
Paulo E. G. Assis, Andreas Fring
We analyse a class of non-Hermitian Hamiltonians, which can be expressed bilinearly in terms of generators of a sl(2,R)-Lie algebra or their isomorphic su(1,1)-counterparts. The Ha…
Metrics and isospectral partners for the most generic cubic PT-symmetric non-Hermitian Hamiltonian
Paulo E. G. Assis, Andreas Fring
We investigate properties of the most general PT-symmetric non-Hermitian Hamiltonian of cubic order in the annihilation and creation operators as a ten parameter family. For variou…
The Bullough-Dodd model coupled to matter fields
P. E. G. Assis, L. A. Ferreira
The Bullough-Dodd model is an important two dimensional integrable field theory which finds applications in physics and geometry. We consider a conformally invariant extension of i…
The quantum brachistochrone problem for non-Hermitian Hamiltonians
Paulo E. G. Assis, Andreas Fring
Recently Bender, Brody, Jones and Meister found that in the quantum brachistochrone problem the passage time needed for the evolution of certain initial states into specified final…