Further Contents of E = mc2

Let us look at the energy-momentum relations for massive and massless particles. They are E = p2/2m and E = cp respectively. As you know, it was Einstein who unified these relations with his special relativity.

Birth Place of E = mc2
In this house, during the years
1903-1905, Albert Einstein created his fundamental treatise on relativity theory.

We can then construct the following Einstein/Wigner table.

Einstein's Genealogy

Massive/Slow between Massless/Fast
Energy
Momentum
E=p2/2m Einstein's
E=(m2 + p2)1/2
E=p
Spin, Gauge,
Helicity
S3
S1 S2
Wigner's
Little Group
S3
Gauge Trans.
Click here for a photo. Build
YOUR OWN HOUSE!

You are then invited to build your own house. How are you going to build your own house? With what? In order to build a house consistent with it neighborhood is to find a Lorentz-covariant entity which takes different forms for slow and fast particles.

See next page.




portrait by Bulent Atalay (1978)