All Questions
Tagged with cpt-symmetry cp-violation
12
questions
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?
...
- 1,117
2
votes
1
answer
480
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Electric dipole moment (EDM) and CP violation
It's well known that a non-zero value for the electric dipole moment (EDM) would imply CP violation. If we consider the interaction Hamiltonian of an EDM $d$ with an electric field $\vec{E}$,
$$
H = -...
- 1,597
0
votes
1
answer
93
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Does it mean time reverses if all particles were antiparticles and vice versa?
First of all, I'm not major in physics and the question might seems stupid, as I'm layman studying for my self-interest and I really don't know much about it. I only think it might open some ...
- 183
3
votes
0
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184
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Antiparticles, CPT and leptogenesis
When people are being careful they'll tell you that antiparticles are the CPT conjugates of particles. You can't say that they are C conjugates or CP because these, while they do reverse the charge, ...
- 841
0
votes
1
answer
550
views
Does the weak force obey the CPT symmetry? How?
I have read that the weak force does not obey the charge symmetry, the parity symmetry, and the time reversal symmetry.
Then how does it obey the CPT symmetry?
- 159
4
votes
2
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323
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Does reversing time give parity reversed antimatter or just antimatter?
Feynman's idea states that matter going backwards in time seems like antimatter.
But, since nature is $CPT$ symmetric, reversing time ($T$) is equivalent to $CP$ operation. So, reversing time gives ...
- 171
6
votes
1
answer
1k
views
C-parity violation evidence
I know about the CP-violation experiments from the 60's and the P-violation from the 50's. But, is there a similar experiment which displays (perhaps historically in the same way as the experiements ...
- 474
1
vote
1
answer
880
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Conservation of $C$-Parity and $P$-parity
Under what situations are $C$-Parity $C=(-1)^{L+S}$ and/or $P$-parity $P=-(-1)^L$ conserved? ( $L$ here is the relative angular momentum and S is the total intrinsic spin).
It would make sense that ...
- 344
5
votes
1
answer
2k
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Which interaction violates T symmetry?
While reading Peskin and Schroeder (page 64) I come across this
Although any relativistic field theory must be invariant under the proper orthocronous Lorentz group, it need not be invariant under ...
- 6,067
1
vote
1
answer
200
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Does the Higgs mechanism address the spin statistics problem?
Since the Higgs mechanism is so intimately tied to binding together massless chiral fermions, does it happen to have anything to say about the spin statistics issue?
I'm actually assuming the answer ...
- 22.1k
4
votes
2
answers
359
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Do any good theories exist on why the weak interaction is so profoundly chiral?
I find the profound asymmetry in the sensitivity of left and right chiral particles to be one of the most remarkable analytical observations captured in the Standard Model. Yet for some, I've not ...
- 22.1k
2
votes
2
answers
265
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How can we know whether we are made of matter or antimatter?
Let us suppose this gedanken experiment:
A man isolated into a room asks if he is made of matter or antimatter.
Could he set some experiments to see if he is made of matter or antimatter instead?
Is ...
- 4,747