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Lecture 2 - The current state of fundamental physics - page 20 / 27

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The mathematical language of the Standard Model is called Quantum Field Theory, in particular a class of theories called Nonabelian Gauge Theories, which are generalizations of QED

The usual physicist’s abbreviation for the standard model looks like

SU(3) ! SU(2) ! U(1)

These symbols are names for certain mathematical objects called groups. Roughly speaking, the group U(1) is associated with QED, the group SU(2) is associated with the Weak force, and SU(3) is associated with the Strong force.

David Kastor

COSMOS to HUMANITY, Spring 2008

Lecture 2 , slide 20

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