Superintegrable systems with a position dependent mass : Kepler-related and Oscillator-related systems

TL;DR

This paper investigates superintegrable two-dimensional Hamiltonian systems with position-dependent mass, deriving new integrals of motion, relating them to classical Kepler and oscillator problems, and exploring their underlying geometric and algebraic structures.

Contribution

It introduces new families of superintegrable Hamiltonians with position-dependent mass and explicitly constructs their quadratic integrals of motion.

Findings

Identified several superintegrable systems with position-dependent mass.

Explicitly obtained quadratic integrals of motion for these systems.

Linked these systems to classical Kepler and harmonic oscillator problems.

Abstract

The superintegrability of two-dimensional Hamiltonians with a position dependent mass (pdm) is studied (the kinetic term contains a factor $m$ that depends of the radial coordinate). First, the properties of Killing vectors are studied and the associated Noether momenta are obtained. Then the existence of several families of superintegrable Hamiltonians is proved and the quadratic integrals of motion are explicitly obtained. These families include, as particular cases, some systems previously obtained making use of different approaches. We also relate the superintegrability of some of these pdm systems with the existence of complex functions endowed with interesting Poisson bracket properties. Finally the relation of these pdm Hamiltonians with the Euclidean Kepler problem and with the Euclidean harmonic oscillator is analyzed.