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9 papers · 2 filters
Coherent state of a nonlinear oscillator and its revival dynamics
Bikashkali Midya, Barnana Roy, Atreyee Biswas
The coherent state of a nonlinear oscillator having a nonlinear spectrum is constructed using Gazeau Klauder formalism. The weighting distribution and the Mandel parameter are stud…
A generalized quantum nonlinear oscillator
Bikashkali Midya, Barnana Roy
We examine various generalizations, e.g. exactly solvable, quasi-exactly solvable and non-Hermitian variants, of a quantum nonlinear oscillator. For all these cases, the same mass…
Exceptional orthogonal polynomials and exactly solvable potentials in position dependent mass Schroedinger Hamiltonians
Bikashkali Midya, Barnana Roy
Some exactly solvable potentials in the position dependent mass background are generated whose bound states are given in terms of Laguerre- or Jacobi-type exceptional orthogo…
Entanglement and Discord of superposition of Greenberger-Horne-Zeilinger states
Preeti Parashar, Swapan Rana
We calculate the analytic expression for geometric measure of entanglement for arbitrary superposition of two -qubit canonical orthonormal Greenberger-Horne-Zeilinger () st…
Comment on "Groverian Entanglement Measure and Evolution of Entanglement in Search Algorithm for n(= 3, 5)-Qubit Systems with Real Coefficients" (Volume 6, Number 4, August 2007), by Arti Chamoli and C. M. Bhandari
Preeti Parashar, Swapan Rana
We point out that the main results-the analytic expressions for the Groverian Measure of Entanglement, in the above mentioned paper are erroneous. The technical mistake of the pape…
Non-Hermitian Quantum Mechanics with Minimal Length Uncertainty
T. K. Jana, P. Roy
We study non-Hermitian quantum mechanics in the presence of a minimal length. In particular we obtain exact solutions of a non-Hermitian displaced harmonic oscillator and the Swans…