Reaction-noise induced homochirality

Details Reaction-noise induced homochirality Reaction-noise induced homochirality

2007-01-03

arxiv.org/abs/q-bio/0701005v1

Chemical Physics Letters 431 (2006) 185-189

Biology

Quantitative Biology

Populations and Evolution

11 pages, 3 figures in color

Scientific paper

10.1016/j.cplett.2006.09.059

Starting from the chemical master equation, we employ field theoretic techniques to derive Langevin-type equations that exactly describe the stochastic dynamics of the Frank chiral amplification model with spatial diffusion. The intrinsic multiplicative noise properties are completely and rigorously derived by this procedure. We carry out numerical simulations in two spatial dimensions. When the inherent spatio-temporal fluctuations are properly included, then complete chiral amplification results from a purely racemic initial configuration. Phase separation can also arise in which the enantiomers coexist in spatially segregated domains separated by a sharp racemic interface or boundary.

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