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The Influence of Demographic Stochasticity on Population Dynamics

A Mathematical Study of Noise-Induced Bistable States and Stochastic Patterns

  • Book
  • © 2014

Overview

Authors:
  1. Tommaso Biancalani

    1. Department of Physics, University of Illinois at Urbana-Champaign, Urbana, USA

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  • Nominated as an outstanding Ph.D. thesis by the University of Manchester, UK
  • Reviews the basic concepts of pattern instabilities
  • Introduces the novel explanatory concepts of noise-induced bistable states and stochastic patterns
  • Describes an improvement to the van Kampen expansion
  • Includes supplementary material: sn.pub/extras

Part of the book series: Springer Theses (Springer Theses)

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Table of contents (6 chapters)

  1. Front Matter

    Pages i-xvii
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  2. Introduction

    • Tommaso Biancalani
    Pages 1-17

  3. Methods

    • Tommaso Biancalani
    Pages 19-30

  4. Noise-Induced Bistability

    • Tommaso Biancalani
    Pages 31-61

  5. Stochastic Waves on Regular Lattices

    • Tommaso Biancalani
    Pages 63-82

  6. Stochastic Waves on Complex Network

    • Tommaso Biancalani
    Pages 83-98

  7. Conclusions

    • Tommaso Biancalani
    Pages 99-105

  8. Back Matter

    Pages 107-113
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Keywords

About this book

The dynamics of population systems cannot be understood within the framework of ordinary differential equations, which assume that the number of interacting agents is infinite. With recent advances in ecology, biochemistry and genetics it is becoming increasingly clear that real systems are in fact subject to a great deal of noise. Relevant examples include social insects competing for resources, molecules undergoing chemical reactions in a cell and a pool of genomes subject to evolution. When the population size is small, novel macroscopic phenomena can arise, which can be analyzed using the theory of stochastic processes. This thesis is centered on two unsolved problems in population dynamics: the symmetry breaking observed in foraging populations and the robustness of spatial patterns. We argue that these problems can be resolved with the help of two novel concepts: noise-induced bistable states and stochastic patterns.

Authors and Affiliations

  • Department of Physics, University of Illinois at Urbana-Champaign, Urbana, USA

    Tommaso Biancalani

About the author

Tommaso Biancalani is currently a post-doctoral researcher with a joint appointment at the NASA Astrobiology Institute and the Department of Physics at the University of Illinois. He is working on the evolutionary theory of the origin of life. Previously, he contributed to the fields of non-equilibrium statistical mechanics and population dynamics. He has obtained a PhD in theoretical physics from the University of Manchester in 2013, under the supervision of Prof. Alan McKane.

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