Crypto-harmonic oscillator in higher dimensions: classical and quantum aspects

@article{Ghosh2007CryptoharmonicOI,
  title={Crypto-harmonic oscillator in higher dimensions: classical and quantum aspects},
  author={Subir Kumar Ghosh and Bibhas Ranjan Majhi},
  journal={Journal of Physics A: Mathematical and Theoretical},
  year={2007},
  volume={41},
  pages={065306}
}
  • S. GhoshB. R. Majhi
  • Published 27 September 2007
  • Physics
  • Journal of Physics A: Mathematical and Theoretical
We study complexified harmonic oscillator models in two and three dimensions. Our work is a generalization of the work of Smilga (2007 Preprint 0706.4064 (J. Phys. A: Math. Theor. at press)) who initiated the study of these Crypto-gauge invariant models that can be related to PT-symmetric models. We show that rotational symmetry in higher spatial dimensions naturally introduces more constraints (in contrast to Smilga (2007 Preprint 0706.4064 (J. Phys. A: Math. Theor. at press)) where one deals… 

Pseudo-Hermitian Representation of Quantum Mechanics

A diagonalizable non-Hermitian Hamiltonian having a real spectrum may be used to define a unitary quantum system, if one modifies the inner product of the Hilbert space properly. We give a

Uncertainty Relations for Some Central Potentials in N-Dimensional Space

We study the uncertainty relation for three quantum systems in the N-dimensional space by using the virial theorem (VT). It is shown that this relation depends on the energy spectrum of the system as

Fractional oscillators from non-standard Lagrangians and time-dependent fractional exponent

  • R. El-Nabulsi
  • Physics, Mathematics
    Computational and Applied Mathematics
  • 2013
Recently, the topics of fractional calculus of variations and non-standard Lagrangians have gained increasing importance both in mathematical and physical theories. In this paper, we generalize the

Fractional oscillators from non-standard Lagrangians and time-dependent fractional exponent

Recently, the topics of fractional calculus of variations and non-standard Lagrangians have gained increasing importance both in mathematical and physical theories. In this paper, we generalize the

Cryptogauge symmetry and cryptoghosts for crypto-Hermitian Hamiltonians

We discuss the Hamiltonian H = p2/2 − (ix)2n+1 and the mixed Hamiltonian Hmixed = (p2 + x2)/2 − g(ix)2n+1. The Hamiltonians H and in some cases also Hmixed are crypto-Hermitian in a sense that, in

Solvable PT-symmetric model with a tunable interspersion of nonmerging levels

We study the spectrum in such a PT-symmetric square well (of a diameter L⩽∞) where the “strength of the non-Hermiticity” is controlled by the two parameters, viz., by an imaginary coupling ig and by

A canonical approach to the quantization of the damped harmonic oscillator

We provide a new canonical approach for studying the quantum mechanical damped harmonic oscillator based on the doubling of degrees of freedom approach. Explicit expressions for Lagrangians of the

Moyal products -- a new perspective on quasi-hermitian quantum mechanics

The rationale for introducing non-Hermitian Hamiltonians and other observables is reviewed and open issues identified. We present a new approach based on Moyal products to compute the metric for

Real Spectra in Non-Hermitian Hamiltonians Having PT Symmetry

The condition of self-adjointness ensures that the eigenvalues of a Hamiltonian are real and bounded below. Replacing this condition by the weaker condition of $\mathrm{PT}$ symmetry, one obtains new

Construction of Complex Invariants for Classical Dynamical Systems

With a view to extracting some further insight into the features of a dynamical system, we investigate here the possibility of its admitting complex dynamical invariants. For this purpose, both the

Complex Trajectories in the Quartic Oscillator and Its Semiclassical Coherent-State Propagator

Abstract The semiclassical approximation of the coherent-state propagator requires the computation of complex trajectories satisfying special boundary conditions. In this paper we present a method