Quasi-exactly solvable quartic potentials with centrifugal and Coulombic terms
نویسنده
چکیده
D−dimensional central and complex potentials of a Coulomb plus quartic-polynomial form are considered in a PT −symmetrized radial Schrödinger equation. Arbitrarily large finite multiplets of bound states are shown obtainable in an elementary form. Relations between their energies and couplings are determined by a finite-dimensional secular equation. The Bender’s and Boettcher’s one-dimensional quasi-exact oscillators re-emerge here as the simplest chargeless solutions.
منابع مشابه
Quasi-exactly solvable quartic: real algebraic spectral locus
We describe the real quasi-exactly solvable spectral locus of the PT-symmetric quartic using the Nevanlinna parametrization. MSC: 81Q05, 34M60, 34A05.
متن کاملQuasi-exactly solvable quartic: real QES locus
We describe the real quasi-exactly solvable locus of the PT-symmetric quartic using Nevanlinna parametrization. MSC: 81Q05, 34M60, 34A05
متن کاملQuasi Exactly Solvable Difference Equations
Several explicit examples of quasi exactly solvable ‘discrete’ quantum mechanical Hamiltonians are derived by deforming the well-known exactly solvable Hamiltonians of one degree of freedom. These are difference analogues of the well-known quasi exactly solvable systems, the harmonic oscillator (with/without the centrifugal potential) deformed by a sextic potential and the 1/ sin x potential de...
متن کاملA pr 1 99 9 Harmonic oscillator well with a screened Coulombic core is quasi - exactly solvable
In the quantization scheme which weakens the hermiticity of a Hamiltonian to its mere PT invariance the superposition V (x) = x 2 + Ze 2 /x of the harmonic and Coulomb potentials is defined at the purely imaginary effective charges (Ze 2 = if) and regularized by a purely imaginary shift of x. This model is quasi-exactly solvable: We show that at each excited, (N + 1)−st harmonic-oscillator ener...
متن کاملQuasi-exact minus-quartic oscillators in strong-core regime
PT −symmetric potentials V (x) = −x + iB x + C x + iDx + iF/x + G/x are quasi-exactly solvable, i.e., a specific choice of a small G = G = integer/4 is known to lead to wave functions ψ(x) in closed form at certain charges F = F (QES) and energies E = E. The existence of an alternative, simpler and non-numerical version of such a construction is announced here in the new dynamical regime of ver...
متن کامل