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2 votes
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Confused about square of time-reversal operator $T$

I am reading An Introduction to Quantum Field Theory by Peskin & Schroeder, and I am confused about what is the square $T^2$ of time reversal operator $T$. My guess is that for $P^2$, $C^2$ and $T^...
Andrea's user avatar
  • 613
2 votes
1 answer
218 views

Does the CPT theorem imply $CP=T$?

Does the CPT theorem imply $CP=T$? That is, does it imply that the action of Charge Conjugation and Parity inversion on some representation of the Lorentz group, is the same as doing a time reversal? ...
Craig's user avatar
  • 1,117
0 votes
1 answer
252 views

CPT invariance in Dirac Bilinears

I am currently working on exercise 3.7c of Peskin and Schroeder's An Introduction to Quantum Field Theory. The problem statement is: Show that any Hermition, Lorentz scalar local operator built from $...
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3 votes
1 answer
802 views

Intrinsic parity of particle and antiparticle with spin zero

I need to prove that the intrinsic parities of a particle and antiparticle with spin zero are the same. Can I prove that by an argument that operator of $P$-inversion commutes with charge conjugation ...
Andrew McAddams's user avatar