Physics – Biological Physics
Scientific paper
2001-07-19
J.Phys.A34:L703-L708,2001
Physics
Biological Physics
LaTex file, 6 pages, 1 postscript figure. Typographical errors corrected, minor changes added. Submitted to J.Phys.Lett.A
Scientific paper
10.1088/0305-4470/34/49/103
A calculational framework is proposed for phylogenetics, using nonlocal quantum field theories in hypercubic geometry. Quadratic terms in the Hamiltonian give the underlying Markov dynamics, while higher degree terms represent branching events. The spatial dimension L is the number of leaves of the evolutionary tree under consideration. Momentum conservation modulo ${\mathbb Z}_{2}^{times L}$ in $L \leftarrow 1$ scattering corresponds to tree edge labelling using binary L-vectors. The bilocal quadratic term allows for momentum-dependent rate constants - only the tree(s) compatible with selected nonzero edge rates contribute to the branching probability distribution. Applications to models of evolutionary branching processes are discussed.
Bashford J. D.
Jarvis Peter D.
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