Poincaré, Einstein, and Poincaré with Decoherence

Arthur Wightman in 2002. I was in his class on the Lorentz group in 1960,
and I learned this two-by-two representation from him.
Two-by-two matrices enable us to do to many wonderful things. On this webpage, I would like to use them to write a history of physics.

Let us study Polarization optics with the Naimark representation of the Lorentz group.

copyright@2010 by Y. S. Kim, unless otherwise specified. The image of Feynman is from the public domain.
Click here for his home page.