CPT symmetry and CP violation. Why energy and momentum are conserved?
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Symmetry in everyday language refers to a sense of harmonious and beautiful proportion and balance. In mathematics, "symmetry" has a more precise definition, that an object is invariant to any of various transformations; including reflection, rotationor scaling. Charge conjugation is a transformation that switches all particles with their corresponding antiparticles, and thus changes the sign of all charges: not only electric charge but also the charges relevant to other forces. In physics, C-symmetry means the symmetry of physical laws under a charge-conjugation transformation. Electromagnetism, gravity and the strong interaction all obey C-symmetry, but weak interactions violate C-symmetry. In quantum mechanics, a parity transformation (also called parity inversion) is the flip in the sign of one spatial coordinate. In three dimensions, it can also refer to the simultaneous flip in the sign of all three spatial coordinatesIt can also be thought of as a test for chiralityof a physical phenomenon, in that a parity inversion transforms a phenomenon into its mirror image. All fundamental interactions of elementary particles, with the exception of the weak interaction, are symmetric under parity. The weak interaction is chiral and thus provides a means for probing chirality in physics. In interactions that are symmetric under parity, such as electromagnetism in atomic and molecular physics, parity serves as a powerful controlling principle underlying quantum transitions.the combination of C-symmetry (charge conjugation symmetry) and P-symmetry (parity symmetry). CP-symmetry states that the laws of physics should be the same if a particle is interchanged with its antiparticle (C symmetry) while its spatial coordinates are inverted ("mirror" or P symmetry). The discovery of CP violation in 1964 in the decays of neutral kaons resulted in the Nobel Prize in Physics in 1980 for its discoverers James Cronin and Val Fitch.
Charge, parity, and time reversal symmetry is a fundamental symmetry of physical lawsunder the simultaneous transformations of charge conjugation (C), parity transformation(P), and time reversal (T). CPT is the only combination of C, P, and T that is observed to be an exact symmetry of nature at the fundamental level.The CPT theorem says that CPT symmetry holds for all physical phenomena, or more precisely, that any Lorentz invariant local quantum field theorywith a Hermitian Hamiltonian must have CPT symmetry.
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Source:
• This Particle Breaks Time Symmetry
https://en.m.wikipedia.org/wiki/Symmetry
https://en.m.wikipedia.org/wiki/C-sym...
https://en.m.wikipedia.org/wiki/Parit...)
https://en.m.wikipedia.org/wiki/CP_vi...
https://en.m.wikipedia.org/wiki/CPT_s...
Music:
• Ross Bugden - Skies
credit: / 1veritasium
(I had tried to remake this video and add some basic concepts regarding this topic)
Edited by: Prashant Banerjee
Voice by: Prashant Banerjee
#CPTsymmetry #CPviolation #CandPsymmetry
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