### Abstract

We present a Hamiltonian approach for the well-known Eigen model of the Darwin selection dynamics. Hamiltonization is carried out by means of the embedding of the population variable space, describing behavior of the system, into the space of doubled dimension by introducing auxiliary dynamic variables. Besides the study of the formalism, we try to interpret its basic elements (phase space, Hamiltonian, geometry of solutions) in terms of theoretical biology. A geometric treatment is given for the considered system dynamics in terms of the geodesic flows in the Euclidean space where the population variables serve as curvilinear coordinates. Time evolution of the distribution function is found for arbitrary distributed initial values of the population variables.

Original language | English |
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Pages (from-to) | 441-450 |

Number of pages | 10 |

Journal | Physica D: Nonlinear Phenomena |

Volume | 112 |

Issue number | 3-4 |

Publication status | Published - 1998 |

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### Keywords

- Darwin systems
- Hamiltonian formalism
- Population dynamics

### ASJC Scopus subject areas

- Applied Mathematics
- Statistical and Nonlinear Physics

### Cite this

*Physica D: Nonlinear Phenomena*,

*112*(3-4), 441-450.