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5 papers · 2 filters
New Exactly Solvable Isospectral Partners for PT Symmetric Potentials
Anjana Sinha, Pinaki Roy
We examine in detail the possibilty of applying Darboux transformation to non Hermitian hamiltonians. In particular we propose a simple method of constructing exactly solvable PT s…
Generation of exactly solvable non-Hermitian potentials with real energies
Anjana Sinha, Pinaki Roy
A series of exactly solvable non-trivial complex potentials (possessing real spectra) are generated by applying the Darboux transformation to the excited eigenstates of a non-Hermi…
Extremal Quantum States in Coupled Systems
K. R. Parthasarathy
Let be finite dimensional complex Hilbert spaces describing the states of two finite level quantum systems. Suppose is a state in ${\cal H}_i, i=1,…
Nonlocal Properties and Local Invariants for Bipartite Systems
Sergio Albeverio, Shao-Ming Fei, Preeti Parashar +1
The nonlocal properties for a kind of generic N-dimensional bipartite quantum systems are investigated. A complete set of invariants under local unitary transformations is presente…
An exactly solvable PT symmetric potential from the Natanzon class
G. Levai, A. Sinha, P. Roy
The symmetric version of the generalised Ginocchio potential, a member of the general exactly solvable Natanzon potential class is analysed and its properties are compa…