The Jungle Universe and its Twisting Species

Jérome Perez, André Füzfa, Timoteo Carletti, Laurence Melot, Sêcloka Lazare Guedezounme

Research output: Book/Report/JournalOther report

76 Downloads (Pure)


In this paper, we show that the dynamics of homogeneous and isotropic Friedmann-
Lematre universes can be studied with population dynamics, in particular with the generalized Lotka-Volterra equation where the competitive species are the barotropic fluids filling the Universe. Without coupling between those fluids, Lotka-Volterra formulation offers a pedagogical way to interpret usual Friedmann-Lematre cosmological dynamics. When the cosmological fluids are coupled however, we establish new dynamical properties of Friedmann-Lematre universes consisting of cycles between its interacting components. This provides a new asymptotic behavior for cosmic expansion in presence of coupled species, beyond the standard de Sitter, Einstein-de Sitter and Milne cosmologies. Finally, we conjecture that chaos can appear for at least four interacting fluids.
Original languageEnglish
Place of PublicationNamur
PublisherNamur center for complex systems
Number of pages18
Publication statusPublished - 4 Jun 2013

Publication series

NamenaXys Technical Report Series
PublisherUniversity of Namur


Dive into the research topics of 'The Jungle Universe and its Twisting Species'. Together they form a unique fingerprint.
  • The Jungle Universe

    Author: Melot, L., 30 Jun 2012

    Supervisor: Fuzfa, A. (Supervisor) & Pérez, J. (External person) (Co-Supervisor)

    Student thesis: Master typesMaster in Mathematics

Cite this