Other
Scientific paper
Jul 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996aipc..379...97p&link_type=abstract
Physical orgin of homochirality in life. AIP Conference Proceedings, Volume 379, pp. 97-109 (1996).
Other
1
Structure And Bonding, Macromolecules And Polymer Molecules
Scientific paper
Chiral asymmetry is apparent in almost all living organisms on earth. However, the origins of chirality are unknown. One proposed theory of chiral asymmetry is by a symmetry-breaking transition such as the explosion of a supernova emitting neutrinos into the earth's biosphere during the prebiotic era. The discovery of weak neutral currents (WNC) reinforces this theory. We present a simulation of this theory by an electrical circuit that models the bifurcation equation for the chiral symmetry breaking process. There are three components that constitute this circuit: chiral circuit, sawtooth wave generator, and noise generator. The solution to the chiral circuit, which is the core of the hardware, generates the bifurcation equation. The sawtooth wave generator controls the bifurcation point (critical point), and the noise generator gives the system randomness. We included an adjustable bias voltage and saw a tendency to favor one symmetry over another (D or L) with randomness generated by noise.
Cheng Wei-Chen
Cline David
Liu Ya-Ying
Park Jaemo
So Hiroto
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