What Are the Implications of Parity Operations and CPT Theorem?

[physicsforumsfan]

Hey all,

I have a four part question:

Homework Statement

Let ψ represent a wave function where x,y,z are spatial coordinates and t is time. The particles \pi^{-}, \pi^{0}, \pi^{+} are pions (\pi mesons). The parity inversion operation is represented by

The Attempt at a Solution

Parities involve a simple change in sign with regards to the components.

∴Pψ(x,y,z,t)=ψ(-x.-y,-z,-t)

Part B

Homework Statement

The time reversal of above qs is represent by?

The Attempt at a Solution

I am not sure if this is inversion of the components (xyzt) or inverting the sign of the pi mesons. My answer is but not sure:

Tψ(x,y,z,t)=ψ(-x.-y,-z,t)

Part C

Homework Statement

For first question, charge conjugation is what?

The Attempt at a Solution

C\pi^{-} = \pi^{+}, C\pi^{+}=\pi^{-}, C\pi^{0} = \pi^{0}

This seems straight forward but maybe too straight forward?

Part D

Homework Statement

According to the CPT theorem, if P is violated in an experiment and T is not, then we know what?

The Attempt at a Solution

Since CP are always grouped, the answer would be:

C is also violated?

Help anyone,

Thanks

 

[physicsforumsfan]

Hi,

no reply?

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