Stable States of Biological Organisms

Details Stable States of Biological Organisms Stable States of Biological Organisms

2009-07-27

arxiv.org/abs/0907.4628v1

Concepts Phys. 6 (2009) 179-194

Physics

Biological Physics

Latex file, 12 pages, 4 figures

Scientific paper

A novel model of biological organisms is advanced, treating an organism as a self-consistent system subject to a pathogen flux. The principal novelty of the model is that it describes not some parts, but a biological organism as a whole. The organism is modeled by a five-dimensional dynamical system. The organism homeostasis is described by the evolution equations for five interacting components: healthy cells, ill cells, innate immune cells, specific immune cells, and pathogens. The stability analysis demonstrates that, in a wide domain of the parameter space, the system exhibits robust structural stability. There always exist four stable stationary solutions characterizing four qualitatively differing states of the organism: alive state, boundary state, critical state, and dead state.

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