Soft Spots in Dirac's Papers
and Feynman's Papers

Both Dirac and Feynman made their life-long efforts to make quantum mechanics consistent with special relativity. Click here for a story. However, they left some soft spots in their papers. Indeed, those soft spots are excellent homework problems for us.

On the issue of the Poincar� group

On the issue of the time-separation variable


Who is this young man?
copyright@2011,2015 by Y. S. Kim, unless otherwise specified.

  1. Click here for his home page.

  2. His Einstein page.
  3. Princeton page.

  4. His style page.