Karl-Erik Thylwe

Available identifiers

zbMath Open thylwe.karl-erikMaRDI QIDQ1734881

List of research outcomes

Publication	Date of Publication	Type
Heavy-particle resonance phase shifts: an improved amplitude-phase formula	2019-03-27	Paper
Near/far-side angular decompositions of Legendre polynomials using the amplitude-phase method	2017-09-15	Paper
Two-Body Local-Momentum Approximation of Spinless Particles Scattered by a (1+1)-D Woods–Saxon Barrier Potential	2017-09-14	Paper
On Calculations of Legendre Functions and Associated Legendre Functions of the First Kind of Complex Degree	2015-08-26	Paper
Approximate Bound States Solution of the Hellmann Potential	2014-04-04	Paper
Bohr-Sommerfeld quantization condition for Dirac states derived from an Ermakov-type invariant	2014-03-06	Paper
On pseudospin symmetry of Dirac states	2013-05-31	Paper
Light–heavy quark-type linear potential models with spin- and pseudospin-symmetric states	2013-04-11	Paper
Semiclassical aspects and supersymmetry of bound Dirac states for central pseudo-scalar potentials	2013-03-20	Paper
Equivalence of the empirical shifted Deng-Fan oscillator potential for diatomic molecules	2013-02-11	Paper
Pseudospin symmetry in the relativistic Killingbeck potential: quasi-exact solution	2012-05-28	Paper
Coupled radial Schrödinger equations written as Dirac-type equations: application to an amplitude-phase approach	2012-04-27	Paper
On Regge pole trajectories for a rational function approximation of Thomas–Fermi potentials	2010-09-28	Paper
Dirac resonance energies for central potentials with different Lorentz-type potential couplings	2010-06-16	Paper
Amplitude-phase formula for theS-matrix derived from invariants of the reduced first-order radial Dirac equation	2009-03-26	Paper
Amplitude-phase methods for analyzing the radial Dirac equation: calculation of scattering phase shifts	2008-08-13	Paper
A new amplitude-phase method for analyzing scattering solutions of the radial Dirac equation	2008-04-08	Paper
Study of the validity of the phase-integral connection formula for potential barriers of arbitrary thickness	2007-05-16	Paper
Multi-state complex angular momentum residues	2006-10-16	Paper
Monotonic stability.	2006-02-17	Paper
On transverse stability of synchronized chaotic attractors.	2006-02-17	Paper
Chaos-hyperchaos transition.	2006-02-16	Paper
Generalization of the amplitude-phaseS-matrix formula for coupled scattering states	2005-12-16	Paper
An amplitude-phase approach to calculating Regge-pole positions and residues	2005-08-02	Paper
ScatteringS-matrix derived from invariants of the Ermakov–Lewis type	2005-04-05	Paper
The barrier transmission problem treated by the amplitude-phase method and expressed in terms of an invariant of the Ermakov–Lewis type	2005-03-07	Paper
Note on invariants for uncoupled Ermakov systems	2004-06-09	Paper
On pulse-induced transition amplitudes in a two-state quantum system without level crossings	2004-06-09	Paper
Harmonic oscillator subject to parametric pulses: an amplitude (Milne) oscillator approach	2001-09-11	Paper
The `Ermakov - Lewis' invariants for coupled linear oscillators	2000-07-28	Paper
Nonlinear phase-integral approximations of stationary waves in nonhomogeneous systems	2000-05-08	Paper
Higher-order narrow-tube quantizations of quasienergies	2000-02-20	Paper
https://portal.mardi4nfdi.de/entity/Q4237421	1999-08-08	Paper
Time-dependent normal form Hamiltonian for dynamical equilibria	1998-11-16	Paper
Semiclassical narrow-tube quantizations of time-periodic Hamiltonian systems	1996-10-14	Paper
Narrow-tube approximation of semiclassical quasi-energies: application to the weakly nonlinear Duffing oscillator	1996-06-10	Paper
New theorem on action integrals and oscillation periods of motion in polynomal multi-well potentials	1991-01-01	Paper

Research outcomes over time

Doctoral students

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Known relations from the MaRDI Knowledge Graph

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