Dr. A. Garrett Lisi
Theiss Research


Project Title:
E8 Theory

Summary:
The Standard Model of particle physics provides an accurate but disjointed description of nature. Each different force--electromagnetic, weak, and strong--is described by a different, smooth geometric shape, called a Lie group, moving over our four dimensions of space-time. Each force particle--photon, weak boson, and gluon--is identified with a symmetry of the corresponding shape. The matter particles--electrons, neutrinos, and quarks--interact with the different forces according to their separate electric, weak, and strong charges. Gravity may also be described as a curved shape moving over our space-time, interacting with matter according to its mass and spin. The particle masses arise from interaction with the Higgs field, which also interacts with gravity and the other forces. It is the goal of E8 Theory to develop a unified description of all fundamental particle fields as the symmetries of a single shape. All known fields--the four forces, Higgs, and matter--would be various parts of single, quantized geometric field describing a beautiful shape moving and twisting over our four dimensions of space-time. The most promising candidate for this shape is the largest simple exceptional Lie group, E8, which matches the fields of the Standard Model and gravity remarkably well--but all geometries will be considered in this exciting search.



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