Max-Planck-Institut für Physik komplexer
Systeme
International Workshop on
Biological Evolution and Statistical
Physics
May 10-14, 2000
Biological Information and
Phase Transitions
Manfred Eigen
Max-Planck Institute for Biophysical Chemistry
D-37077 Göttingen
Information has two aspects: a quantity to be called "extent"
and a quality which may be termed "content" since it deals with meaning.
The latter originates via selective self-organization which can be described
also in quantitative physical terms. A prerequisite is the reproducibility
of the informational substrate forming the basis of selection. This paper
focusses on selection being the analogue of a physical phase transition.
In the first part the criteria for phase transitions are formulated. The
second part introduces the concept of information space and describes information
as selected points or regions in this space. In the third part selection
is analyzed in terms of the criteria for phase transitions, and finally
the concept is confronted with experimental data. The conclusion is reached
that information content is generated via selection which can be described
as a phase transition in information space.
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