Highlights
A Calculation the Size of Manhattan
Submitted by the American Institute of Mathematics (AIM)
Mathematicians have mapped the inner workings of one of
the most complicated structures ever studied: the object known
as the exceptional Lie group E8.
This achievement is significant both as an advance in
basic knowledge and because of the many connections
between E8 and other areas, including
string theory and geometry.
The magnitude of the calculation is staggering: the answer,
if written out in tiny print, would cover an area the size of
Manhattan.
Mathematicians are known for their solitary work style,
but the assault on E8 is part of a large
project bringing together 18 mathematicians from the
U.S. and Europe for an intensive four-year collaboration.
"This is exciting," said Peter Sarnak,
Eugene Higgins Professor of Mathematics at Princeton University (not
affiliated with the project).
"Understanding and classifying the representations of Lie Groups has been
critical to understanding phenomena in many different areas of
mathematics and science including algebra, geometry, number theory,
Physics and Chemistry. This project will be valuable for
future mathematicians and scientists."
Bigger than the Human Genome
The magnitude of the E8 calculation invites comparison with the Human
Genome Project. The human genome, which contains all the genetic information of
a cell, is less than a gigabyte in size. The result of the E8 calculation,
which contains all the information about E8 and its
representations, is 60 gigabytes in size. That is enough space to store 45
days of continuous music in MP3 format.
While many scientific projects involve processing large
amounts of data, the E8 calculation is very different:
the size of the input is comparatively small, but the answer itself is
enormous, and very dense.
Like the Human Genome Project, these results are just
the beginning. According to project leader Jeffrey Adams, "This is basic
research which will have many implications, most of which we don't understand
yet. Just as the human genome does not instantly give you a new
miracle drug, our results are a basic tool which people will use to advance
research in other areas."
This could have unforeseen implications in mathematics and physics which
do not appear for years.
According to Hermann Nicolai, a director of the Max Planck Institute in Potsdam,
Germany (not affiliated with the project),
"This is an impressive achievement. While mathematicians have known for
a long time about the beauty and the uniqueness of E8, we physicists
have come to appreciate its exceptional role only more recently --- yet, in
our attempts to unify gravity with the other fundamental forces into a
consistent
theory of quantum gravity, we now encounter it at almost every corner! Thus,
understanding the inner workings of E8 is not only a great
advance for pure mathematics, but may also help physicists in their quest
for a unified theory."
For more information visit the E8 page.
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