Quantum gravity force violations

1. Jul 8, 2004

touqra

Apart from C, P and T violation in weak interaction, do the same violations occur for the other three forces, in particular, the quantum gravity force?

Last edited: Jul 8, 2004
2. Jul 8, 2004

zefram_c

Both EM and strong force respect C, P and T. I am pretty certain that gravity also respects them: a particle has the same mass as its antiparticle so its gravitational pull is the same (C). I think Einstein's equations are time reversal invariant so (T) holds, hence (P) should also hold by CPT.

3. Jul 8, 2004

touqra

Why then is the weak force the only force to violate C, P and T symmetry? Isn't that funny?

4. Jul 8, 2004

Haelfix

The answer is that experiment demands it..

So by construction the theory is chiral, eg its a guage theory in the yangmills sense with two representations of SU(2)

Su(2) (left) * Su(2) (right)

5. Jul 9, 2004