Level Head (level_head) wrote in how_life_began,
Level Head
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how_life_began

Handedness and Dark Matter

The asymmetry of existence: do we owe our existence to cold dark matter and the weak force?
Exp Biol Med (Maywood). 2004 Jan;229(1):21-32.
Borchers AT, Davis PA, Gershwin ME.
Division of Rheumatology, Allergy, and Clinical Immunology, University of California at Davis School of Medicine, Davis, California 95616, USA.


A common theme throughout biology is homochirality, including its origin and especially implications. Homochirality has also intrigued scientists because of the hypothesis that life, as it currently exists, could not have occurred without it.

In this review, we discuss several hypotheses regarding homochirality and their linkage to processes that range from subatomic in scale to processes that help define the structure of the universe. More importantly, this exploration begins with the knowledge that humans inhabit the universe in which there is an excess of normal matter over antimatter. It is a universe characterized by homochirality but is nonetheless contained in what is most easily described as a 3+1dimensional spacetime wherein most laws of physics are invariant under spacetime transformations.

This restriction on spacetime poses significant constraints on the processes that can be invoked to explain homochirality. However, in dealing with such restraints, including the total mass contained in the universe, the concepts of cold dark matter and dark energy can be incorporated into cosmological models with resultant behaviors and predictions very much in accord with the findings of the cosmic background surveys. Indeed, the introduction of cold dark matter and dark energy to solve problems relating to the mass found in the universe may provide a means for generating the needed asymmetry to allow homochirality to arise.
===|==============/ Level Head
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